If you're open to business cards, I'd definitely recommend getting the Citi/AA Biz (another 50k AA miles) and the Chase Ink Bold (50k Chase UR points).

On top of that, I'd echo what another poster said and start getting some USAirways miles with the Barclays USAirways card. And the Chase United Explorer is a must, since it's easy to get the bump to the 65k offer from the normal 40k one just by sending a secure message.

Right there you have a nice little app-o-rama:

1 Chase personal card (United Explorer)
1 Chase biz (Ink Bold)
1 Barclays (USAirways)
1 Citi biz (AAdvantage card)