of your potential R2 schools, i'd say wharton should be the only one you need to apply to. they're pretty well known as a player in the HC industry, more so than columbia IMO. your age and GMAT score are right up there (although your GPA is a little low, but i think that can be overcome with a solid app).
you provided reasons as to why you shouldn't apply to the other schools on your list... IMO it would be a waste to apply to schools "just because".
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