Stude,
Having done the UAS for 3 years at uni and now on the commercial side, I think it would be virtually impossible to instruct whilst balance your degree and the RAF. The UAS will demand a lot of your time and I dont think will look favorably on you instructing "civvies" at the weekend instead of lfying with them!
Unfortunately from my experience the two sides rarely mix.
Good luck and enjoy the grob!