I saw first hand my buddies work long duty days, 5-6 days in a row and get to the overnight late and wake up early. I am sure they could go on and on. Plus they are out of gate space in ATL, TA was turned down and there stock is around $9 when everyone else is in the high 20's to high 40's. Plus, plus they lost the buyout of Midwest Express to NWA and another investor.
You have bus PIC time. With that you are highly competitive! I would go to one of the big boys like UAL, CAL, DAL, UPS, FEX, SWA. Airtran is a stepping stone for a lot of regional guys trying to get to the majors. With your experience it doesn't sound like you need a stepping stone.