@Grace-Cook Excellent question and a great time to be asking!
If it's an option, my recommendation would be to start with Procreate on the iPad Pro, and learn specific tricks in Photoshop down the road (if you ever truly need them).
I was an Adobe user (Photoshop, Illustrator, InDesign) for nearly 20 years. The reality is that Photoshop is an absolutely huge piece of software and its original intent was not digital illustration. That makes it tough for new users to get used to—95% of it is stuff you won't ever need and will probably slow you down.
Based on the course material I've sampled so far at SVS, including the foundations courses, I don't see why a Procreate setup would impede you. If anything, it might shorten the distance between learning a new concept and applying it to the canvas, which seems especially key early on.
As you progress in your learning you may notice things you wish you could do. At that point you can always research photoshop tutorials for specific effects, filters, post-processing, blend modes, and so on. Photoshop itself is about $11/month, and you can export Procreate files as PSD to enhance them if you ever feel like you need to.
The industry (and its software) will continually evolve and, while I doubt Adobe is going anywhere anytime soon, it's become clear to me that their way of doing things is probably not the future.
Two other things I'm curious about but haven't really dug into yet are Affinity Designer, which could be an interesting (cheaper and vector-based) Photoshop alternative, and the Sketchboard Pro, which claims to make drawing on the iPad more ergonomic and paper-like, and I can honestly see why.
Good luck and happy learning!