I don't really have an opinion on which computer you should buy, but I thought I would post this deal in case you hadn't seen it: https://www.macrumors.com/2013/07/1...macbooks-by-200-for-back-to-school-promotion/
So, basically, the Best Buy deal is $100 cheaper than Apple's education price. You just won't get the $100 App Store gift card. But that does mean you can get a MBP at $899 and upgrade later as needed.
I really don't have an opinion either way; although, if I were buying, I might go through Best Buy in this instance if that were the computer you wanted. The service and support will be through Apple no matter where you buy it. And always get AppleCare! You can get it any time in the first year. It's $183 for the cMBP through Apple Education. I've always found it worth it. You can mix and match and buy that through Apple later.
Thank you!
--
If I were to buy a cMBP and like I said when I started the thread, I mostly use Photoshop (hopefully going to learn other Adobe programs), should I upgrade to 8/750 or is the 4/500 enough?