Look for the pic time. don't plan long term at the regionals. a lateral move after a year in the reg isn't that bad. go for it if the pic is there before AE. Personally, when I left AE, I did so w/o ever upgrading. I have a personal grudge against that company an the AMR culture. But if they come out of bk victorious it may be a place to be.
But still look for pic time. AMR will promise the world and 2 feet long carrots, be careful. have and exit plan, you don't want to find yourself with too much SIC and no competitive at all. Or also as a 20yr AE ca barely making over 100 bucks hr, 4 on 3 off, with AA promises.

Good luck. Remember you and only you pay the bills. don't marry any company. Your loyalty is as good as the day you get furloughed.

cheers.