Replying to CS6 vs Affinity

Whats up dudes. I'm taking a digital practices class in the spring and we use Photoshop and Illustrator. However in the syllabus they said not to get adobe CC because its like a subscription and total waste. We have the programs installed on school computers but it seems silly to limit the use to just school... you know? So I wanna get it for my laptop!

I tried to find CS6 software on Adobe's site and there's only the CC stuff. So like I don't really know if you can still buy CS6? I already have photoshop downloaded but need illustrator. Everything I've found is like a thousand dollars and I'm not really feeling that haha I feel like that can't be right though. I know I can use a torrent but I'd rather not if I don't have to.

The syllabus also suggests getting Affinity designer and photo. I don't have a clue what that is but it's recommended as a substitute. Would I be able to do all the same things with that? And it's only 40 dollars for each Photo and Designer which is great cause I'm broke lmao.

Also, if we have photoshop/illustrator on school computers would I be able to open those files in Affinity? Sorry for all the questions, I'm sure they will be answered the first day of class but I wanna get ahead a little bit. If I'm gonna switch over to Affinity I wanna get familiar with it before I throw myself into a 300 level class haha. Thanks for the help! (: