I'm planning on taking a trip with my wife summer of 2013 and am aiming for 200K UA miles to get two roundtrip biz class tickets to Europe. I currently have around 50k miles from the Explorer card bonus, plan on getting another 50k via the Sapphire Preferred. After those, with a rough spend estimate I'd get to ~120k total in about a year. So, 80k short of the goal. The kicker: the wife's not so enthusiastic about signing up for new cards, so the more I can keep her from having to do so, the better.

Any bonuses I'm missing out on? Any more 100k-type bonuses coming down the pike? I appreciate the advice, thanks!