So I first applied (and still have) the Chase United MileagePlus Explorer on June 10 2014. I've kept it because of the free checked bags and stuff. I was going to keep it again because I have several flights booked this next year with United where I need the checked bags. But, I think I might cancel now, and then after June 10 sign up for that targeted offer. Is that a risky move? Cancel and reapply like two weeks later?