If mow you have the computer you feel you need, or deserve, (though frankly all the bits listed mean little to me, or probably most average Apple users) and can live with Windows, cool, but
.
Just what are your needs? Why the need for the bits specified?
How long will the beast remain cutting edge? Why the need to have the latest?
Why the need to change your Macs so often?
9 years a Mac owner, and I cannot see myself replacing my second, and current Mini soon, new Mini or not. Replacement won't be until it becomes more cost effective to replace my present Mini than repair, or upgrade it. My guess is that an SSD, mate more RAM and Yosemite will come first.