Agree with the suggestion to just get a new Sapphire Preferred and get a new bonus.
But, why stop there? The Sapphire Preferred comes in both Visa and MC and you can get the bonus on both.
Also get a couple of Chase INK cards and collect another 100K in bonuses.
Chase, I love you! Although I have to wonder why banks which had to be rescued are allowed to handout big bonuses.