Given your profile, getting into Cornell is as expected - it's a school where you have a reasonable shot of getting into.
Schools like Columbia and Chicago are going to be stretches - so if you turn down Cornell this year, you're doing so with the prospect of applying to schools where there's a decent chance you won't get in. And this assume that you've done a great job on your applications.
I would just go to Cornell - it's a good school with solid recruiting for finance. In my view it's not worth going into a holding pattern for yet another year for the nebulous prospect of getting into a slightly better school (unless you're being truly honest with yourself and see the b-school application process as not merely a career move, but a way to obtain a status symbol - and if that's the case, you have to figure out how much of your life you're willing to put on hold for the possibility of getting that status symbol). Again, you'll get good access to finance recruiting coming out of Cornell.
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