I'd say take the job, then if you find you don't want it and got a firm offer from another regional, then kindly deny it prior to the start of training. I don't work for ASA, so I don't know how long from interview to start of training is, but from what I hear they are a pretty good company (work rules/pay/low reserve time) to work for.

How many hours do you have, when applied with them? (just curious as I'm still getting all my ratings and time builts up)