Look at this post: http://www.flyertalk.com/forum/14386923-post2.html. Do what's set forth in that post exactly. Repeat for your wife. That adds up to 300,000 miles.

As I mentioned yesterday, I'm still in learning mode. One of my early lessons was to overcome the reticence I had to apply for two 75K cards at the same time as described in this post. I undoubtedly cost myself 75,000 miles as a result of that mistake. Just be sure that you can afford to spend the $6000 on the cards required to qualify for all four of these bonuses in six months.