No one is using Rec 2020 yet, you can’t even monitor it fully, even with $40,000 monitor solutions - and for Star Wars there certainly isn’t any need or it.
Basically if you master in ACES then you are future proofed for any conceivable delivery colour space.

If you have a passion for it, get yourself to some kind of film school, you need to be working with people on projects, there is really no other way ‘in’ that will get you the experience required. Knowing the software packages, though eventually necessary, is really the least important part.

I’d say 70% or more of what I use is custom code, or scripts or custom plugins, so being able to write in C++ certainly doesn’t hurt, and the skills you develop as a coder are useful accross the board. The people skills are crucial though, as are the contacts and the production experience.