See #1. But really. Let the application close. If you get selected for the market, graciously bow out and let the next person on the waitlist take your place. Applying and pulling out before the close of the applications just looks bad. It also makes you look unorganized; like you don't have your poop in a group. (PS How much do I LOVE the phrase "get your poop in a group"? ROFL) Maybe you don't think this is a big deal, so let me put it another way. Imagine you applied for a job on Monday, and the posting was accepting applications until Friday. Now imagine you calling the store/office on Wednesday to tell them you DON'T want to apply for the job. Think about how that manager would interpret the situation. Then imagine in 6 months you applied for that job again....?!?!?