Well I'll add to scrayteacher's offer of being available for PMs, more for the RAF lifestyle side of things as opposed to the engineering side which scaryteacher I'm sure has covered!
I will say that being an officer is not for everyone, I agree with scaryteacher (can I call you ST please?
), officer roles can be hands-on too (take me for example, I'm an officer but when the hits the fan, I'll be next to my airmen firing my rifle just like anyone else). However, one can't deny that being an officer involves different work environments, as an engineer you'll be working on aircraft, but you'll also be managing a team of airmen to get the job done; you look at the bigger picture and delegate from there.
If your son thinks he'd enjoy it more as an airman, then that's fine; but I think I'd only be comfortable with making that decision if I had looked at being an officer in a lot of detail and thought, "No, that's not for me". And if he's done that, then that's fine.
Since you said your son has read this thread, I'll speak to him directly (if I may):
On paper, you look fantastic. You've done some amazing things and I hope you've enjoyed it along the way. One thing I really should utter is, just keep up the hard work. RAF recruiters will see your Scouts and Cadets experience and think "This is a good lad, he's been commited over a long period of time." and will think higher of you than someone who did Cadets for 3 years then gave up. The RAF is fantastic, there's not one day that goes by for me where I think "I wish I hadn't joined", I've been to some fantastic places all over the world (some not so nice too but that's all part of the fun
) and I work with some of the most awesome men and women I've ever met. If you really, really want this then chase it until you can't go on anymore; it'll be tough along the way in training, but if your hearts set on it then you'll get through. Good luck lad, and hopefully you'll be walking around in a light blue uniform soon enough.
Gawd, I feel like one of those inspirational speakers. TOGETHER, WE CAN DO THIS, WHO'S WITH ME?