u/Able-Telephone3517

So I stumbled upon the IB programme as I was searching for colleges to apply to, and it seemed interesting since IB isn't widely offered in my country. So I'm planning to apply there, now what I wanted to ask was if my subject combination is doable?

Math AA, Physics and Psychology HL, English Lang and Lit, French ab initio, and Computer Science SL.

I want to go towards aerospace engineering or architecture if that doesn't work out. Plus, I know that along with these subjects, there are three core components too: TOK, CAS, and EE. What are those about? I only have a vague idea bout them, as well as a vague idea of what I'm getting myself into ig? I heard the grading system is also quite different, based on numbers, if I remember correctly.

I don't plan on changing my subject choices, but maybe I'll change Psychology to some other group 3 subject, which is easy at SL. Any ideas?

I'd love opinions from alumni and students who are taking/giving the same subjects I chose!