If you don't care for windows, why are you buying a windows machine / looking to hackintosh a windows machine?
One thing isn't clear - what are you doing right now for earning a living? It seems to require a computer but not be actual VR work. Do you do it in windows or osx? I would prioritise whatever you use for earning a living.
If you are not currently earning a living through creating VR then there's no need to buy the latest and greatest Macbook laptop.
Many people on this forum (including me) are very happy with the Macbook Air from 2013 onwards. Perhaps a second hand Macbook would give you a solid OSX machine for earning a living, and give you spare money for building a Windows machine to play about with VR / attempt to hackingtosh.
I don't work with VR but I get the feeling that a) it is very early to be buying stuff for VR - as you say, it's a bad time to be spending large amounts on VR hardware unless you intend to be earning with it b) there is practically no cheap laptop graphics card that gives good VR c) most graphics work is best done with a large, good quality monitor (e.g. 20"-30").
Once you're buying a separate monitor and working out where to put it, then you're most of the way to buying a desktop. With crossplatform VR tools, you can keep your code-in-progress updated on both the laptop and the desktop.
Following e.g. TonyMac's guides for recommended hackintosh purchases for slightly older second hand hardware, but a newer graphics card in mini-ITX or mATX form (both about the size of a Mac Mini or slightly larger, mATX is larger but easier to extend), will give you something that is really EASY to build, small enough to put behind a monitor, plus can easily be updated with new cards, new drives etc.
https://www.tonymacx86.com/buyersguide/september/2017/
Places to buy second hand hardware (not sure if you are in the EU or not, but it also covers non-EU countries outside the USA/UK)
https://www.reddit.com/r/HardwareSwapEU/
Finally, apologies if this seems a bit rude, but I'm not sure how much programming experience you have. Some of your posts make me think you haven't really done much programming before. VR dev work is HARD. If you haven't already, I suggest you install some dev environments, a VR dev environment (e.g. Unity) onto your current hardware and do some into tutorials to see how you get on. There's a lot you can do with what you already have. If you were already pushing the limits of your current hardware, your posts would be a lot more specific about your current issues, and I'm not seeing that.
tldr: do as much learning-how-to-create-VR stuff as you can with your current machine, and save your money for later.
I do not care for Windows, means it is not in my requirements. If the machine will be windows, it is okay, I just prefer OS X. But for VR I will need to have both to test the product, I believe. So, I either need hackintosh option or Apple product(and almost all of them fail with VR). Also, since VR doesn't exist on OS X, but Apple made VR ready for Mac, there will be a demand for VR content for Mac users, and an empty VR Store to get noticed by potential buyers. I mean, getting early to the party has its benefits.
I earn a bit from freelance(art/graphics), what I do can be done in any operating system, and I have an old laptop to do this. I prefer OS X, because I've had a lot of problems with Windows. OS X is just built differently, it cannot run into half of those problems. Because I only used OS X on hackintosh, I couldn't open certain programs, like game engines. I do not own a VR headset yet(except google cardboard), so a lot of things cannot be tested on my current machine. Like, I can run Unreal and Unity on Windows, but not on OS X. My laptop Y510p has 2 types of GPU in it, and only weak integrated one is recognized. Maybe it can handle VR, but fps will be really low, based on some comments on other forums.
I intend to buy VR stuff for earning on VR. It's not my money, where I live I can get a "grant" for opening own business, but it is a bit tricky, you need to prove you have little competition. With VR as my business plan I believe I can prove it well, since it is not as hard to get into, as, for example, selling a game or app at Android store. No enough content, but a lot of demand, so, hopefully, it is possible to earn a bit despite professional level, so to say. And, based on the rules for the "grant", I will have enough time to produce a playable demo, at least, even alone. Plus, I'll earn money before that through freelance.
Anyway, on the grant I was thinking of buying everything needed for VR, because myself I cannot really afford it, but it will open a lot of new possibilities for me. I believe, VR is a really good direction to look into, because it is new for everyone, so everyone has equal chances to make a name. So, regarding learning and saving money for later, I have the opportunity now to get this money, I am not sure, if I will be able to do it later. I also may not get the grant at all, but to ask for it I must show the "to buy list". I have approximately until the end of the month to deal with this.
I was thinking about your message a lot, and also found a review on the "VR upscale" for Lenovo laptops, which made me agree to making my own PC. I have really modest expectations, but I try to plan for the best possible outcome, so I want to choose the tech wisely. My main concern with own build is that I will connect something wrong and nothing is gonna work or break in two weeks or something. I've read and watched videos on building PC yourself, but I see that some things are not clearly mentioned. Like, do I need to have just the stuff in the list or there are things I need to buy additionally, like thermal paste, different wires, special bolts etc. Plus, some components work better/worse with another components, so it is really confusing(like certain motherboard may not handle a powerful GPU). I'm trying to make a list of possible build right now, and see, if it is worth the hassle. It is not that easy to just go and buy stuff I need, there are some rules about it in the terms for getting the grant.
And yeah, the grant itself is amazing opportunity, but mostly in my case. My idea doesn't require a lot of money, and the money they can give is enough for my needs. But since I will need not only the machine(graphics and testing related stuff, a bit on marketing and stores fees), right now I am looking at around 1000-2000 euro to spend on a VR ready laptop/PC. I am from EU, and taxes are crazy from US, so I hope to buy stuff from my own country, or EU.
VR needs massive graphics processing that simple really, unless you buy huge very expensive heavy crap battery life laptop then it will not be the best for what you want. to be honest you want to wit for the imac pro in December and that will cost a minimum of £5000
Well, I do not think there is a laptop this powerful with a good battery life. I was considering a laptop just because I may need to move for jobs later on, and I do not own a car(or can drive) to do so with a desktop PC. My budget is sadly limited, I have 2000 euro tops, I think. I could sacrifice a lot and maybe get around 3000, but that's it. iMac Pro, sure will be powerful, but I was hoping for someone to know about cheaper Apple products.