Hi hazmattg,
Regarding your GMAT, if you believe you can improve your score by 40+ points, you may want to take the test again. Your score is self-reported on your application, so admissions teams will focus on your highest score. This being said, once you reach a 700 on the GMAT, admissions teams tend to focus more on other areas of your application. You have a strong score and this shouldn't be a large concern.
Additionally, one bad grade will not break your application. If you'd like, here is a case study of how one candidate addressed a lower GPA in his application:
http://www.stacyblackman.com/comprehens ... ies/case5/Here is some school specific advice for some of the programs you listed:
Harvard:
http://www.stacyblackman.com/category/harvard-advice/Columbia:
http://www.stacyblackman.com/category/columbia-advice/Wharton:
http://www.stacyblackman.com/category/u ... on-advice/If you are interested, we provide free 30 minute phone consultations here:
http://www.stacyblackman.com/contact/Cheers,
Conrad and the
Stacy Blackman Team
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