Leaving college/school is like staring into the abyss. It's a big shock to the system when you suddenly realise that you have to support yourself, and maybe another person too...
But on the up-side, getting your first pay cheque as a bona-fide full-time employee is pretty damn fine...
IF you have the spare time and money, then I would definitely chill out for a while and travel around. It's far better to do when you are young...
Duxford is pretty cool btw, so put it high on your list.
BTW: I have a load of these type pics:
RAF only right now, but collecting more, I can send you a zip if you like...