Brave man !
I spent years trying to get into BA, only been there two years now and have to say I prefer the flying and culture in my old airline. Still, at your age to throw away all the 'perks' not to mention the pension which has got to be the best in the industry ? I take my hat off to you, good for you !
Airline flying is very much like flying in a straight jacket, its a far cry from what most people percieve it to be, often the smaller cariers and BJ operators are where the friendly atmosphere and grass root flying is to be had.
A friend of mine left BA after only 3 months, its not for everybody ........
Good luck .......