I read your blog. I think u should try out new thinngs like the RAF, even if it means leaving something else thats worth alot. the choice still remains though, think of your future job, does it have any links to band or RAF? maybe ure allowed a trial run at RAF to c wat its like and if u don't like it then u can always come back to something u enjoy.
at the end of the day, sometimes other peoples opinions don't help and your heart has to make the desision itself. take the step which, either way will have consiquences. my tip= go out in the garden, lie down, close your eyes and recap on every thing u evr did in band, beginning to end, all the people u met, all the things uve learnt, every grade uve sucsessfully lived through and sometimes the answer just snaps. i have no answer, but im sure u do inside!