Do you wanna live in the south or east coast? PHL/DCA/ORF vs. ATL.
If you are going to commute (I do), AWAC is CASS and has a pretty good commuter clause. Not sure what the status of CASS at ASA is, but I'm pretty sure they don't have a commuter clause. Seems like that's a must-have item in their new contract...whenever that gets completed.
FO pay is slightly higher at AWAC, much higher the first year, but that is also subject to change with a new ASA contract. AWAC's contract, although concessionary, is one of the best in the 50 seat industry.
My $.02 is go with the first class date - your problem is a good one to have!