As another that has gone the mil-civvie route, I agree with the posts before. Motivation to join the RAF has to be strong, Oficer first ,controller second(although sometimes third with some peoples secondary duties
) It is a major commitment signing on the dotted line. Not so easy to just walk away if it doesn't suit. I enjoyed my time in the RAF and aspects of it that were great and not achievable in civvie street.
What you got to look at is Uni for 3 years then if you go the mil option another year...cranwell and shawbury.....all hard work. but a rewarding career. The next stage if you were to switch eventually would almost certainly start with a huge paycut whilst....yes back studying for up to 9-10 months at hurn dependent on what discipline followed by probably 12-24 months training at unit. ATC is a continual evolving career and you will find that most of your life studying comes with the job...Military and civil.
Worthwhile though either way