Best job in the world. Had 6 years of it on the funbus. Good trips and bad ones but I would not swap any of them, (including the Deci and Akrotiri scheds). Long times away from your home so make sure your missus is up for it. (That was the question we always asked with prospective U/Ts).
Have a face to face with the SAGE/Flt Cmdr, far better than an voice on the phone. You might even get a quick trip in to test the waters.