Always take a firm class date, and if offered a different opportunity later, you can make the decision then.
Commuting sucks IMO but ORD is probably about as easy as it gets between UAL, AA and UPS.
I'm surprised this realignment isn't larger in numbers, perhaps they want to do smaller bids to manage schoolhouse throughput and "clean things up" with regards to retirements and hiring, but that's probably giving them too much strategic planning credit. Training bid probably won't drop for another 4.5-5 weeks given the realignment/displacement cycle...with training starting pretty much immediately after the training bid award comes out.