I think your GMAT should be good enough, based on the fact that your GPA is pretty solid. If I had to guess that if you were dinged from these schools, it's something else other than your GMAT score. However, while we're on the GMAT subject, if you think you can improve that by at least 30-40 points (puts you over 720+), I'd say do it. But if you don't think you can, don't worry about it and just apply.
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