You go smaller, and you're gonna wish you had room for coral in 6 months. I know this sucks, trust me, but hasty decisions are always regretted once the heart rate goes down and frustration levels drop. Those are the equivalent of ammonia and nitrates in humans. We get all twisted up when they're out of whack, and we crash.
Give it a week, get both your tank and yourself stabilized, go over to Gonzo's and shop for some corals, and then make a decision. In the meantime, post up what stuff you want to replace, and I'd bet that some of us have frags to spare of it. Cuz that's just how we roll around here.