If you are going to spend the money, why don't you get the $1999 Mac Studio? Will you be needing the laptop in class?
I am a graphic designer, I have used Photoshop on my 2018 Mac mini, but now I use Affinity Photo and Designer.... I am sure they won't have you using them in class.... I also design more on my iPad Pro 12.9"..... I just got the 14" M1 Pro MacBook.... I am not sure I am going to keep it.... I was playing around with my 4K monitor today and it seems so wonky to set up and use. Also was having weird issues with getting an external keyboard and trackpad set up... maybe it's this particular Macbook (not all 14's).... it might have battery issue as well....
I am considering the Mac Studio, I read some things that others using the M1 Mac mini were having issues in PS after having a lot of layers. Plus other types of issues.... so don't get a MB air or 13". I know about future proofing - I would use a Windows laptop (high specs) for about 2 years before the slow down would get to bug me.... I am almost 4 years on this Mac mini - but as I said I am not using it heavy duty and it is only an i5...
I may wait and see if there is going to be a new Mac mini with either m1 pro or m2.... but that won't be out in time for you.....
Right now, I am trying to play Sims 4.... Mac mini 2018 was starting to run really funky when I played it.... Tried the 13 M1 MBP ran too hot.... 14" is bothering my wrist, so that is why I was trying the externals....