Sandchopper,
Dont worry about whether you're good enough or if its too hard, just bang your tabs into your OC and get the ball rolling. Because...1) It doesnt cost you a penny
2) You may never have to walk across Brecon/Otterburn/Salisbury again.
3) It doesnt rain inside helicopters
4) Think of it as an 18 month resettlement course!
Best of luck with whatever you decide
