I'd say Expressjet would be your best bet as long as you can hold ATL out of training. PSA in CLT would be great except you'd have to start in DAY or TYS for two or three months on reserve. The PSA 15k bonus comes with the two year commitment but you don't have to take it, thereby allowing you to leave the moment you get 1500TT. The only problem is I don't think AA likes hiring pilots from the wholey owned regionals out of turn so you might lose the ability to go to mainline AA early by going to PSA, Piedmont, or Envoy. At least with Expressjet you'd be starting at 37 ish per hour and you can drive to work.