Of course you take it. You take it if the ACC calls too. It's the obvious move.
As for people complaining about the distance of teams, have you seen the Big East lately? Wisconsin, Nebraska, Illinois, Indiana...it's not what it was back in the day. We didn't really complain about Miami either when they joined. Yes, the travel is worse, but it's not that much worse. Lubbock is the only one that's really distant and away from a major airport.
I think our problems in the American were the lack of interesting opponents aside from Cinci, Houston and Memphis + Ollie falling apart. The Big 12 has better programs with bigger names and Hurley isn't Ollie. He's turning his recruiting efforts national now, so this wouldn't hurt at all.