Mate,
I know you won't be talked into going back, but don't get into thinking that people will employ you with AS levels. All they show is that you did GCSE's and have a little bit more experience...But other than that they mean very little unless backed up with the more in depth A2 study - believe me, it's in depth!
For now, if no oppourtunities jump out at you - get working for a few months, think about the USA for the PPL...Ormond Beach and Naples etc... have some attractive packages...
Don't close any doors yet mate, and don't rule out Year 13 all together!
Regards
Mike