The credit card seems like a good deal though I feel like you are missing out on getting lots of bonuses from all the air travel $$$ you book. I would look at the UA MP Visa which would get you 3x RDM (and possibly EQM though you aren't going for that it sounds like). Another option would be looking at something like the AMEX Gold Premier Rewards which has 3x MR points on airfare. I am sure there are other similar cards that also give you good bonus points when it comes to airfares as well.