have you loked at www.climbto350.com
they always seem to have jobs for lower time drivers (1000+ total 200+ multi). Airlines that have positions starting in singles are Air Net and I think maybe Ameriflight. Cape Air does alot of flying down the east coast and caribbean, as well as Guam. But if you have that kind of time I'd personally only fly a single engine bag plane as a last resort, or I was into that kind of thing for the love of it. Get yourself into the right seat of a turbine mate. I hung around bush flying for far too long myself, had a great career indeed, but I could have been a skipper on a jet with a decent operator by now if I had made the correct moves and not been so lazy. That's just me though. Good luck with it anyway, work at it and you'll get what you want no worries.