Thanks for your post. In regards to the GMAT, one thing that is important to remember is that your highest GMAT score is self-reported on your application. For this reason, admissions teams will focus on your best score, and there isn't any harm in taking the test again. We normally recommend to candidates that if they believe they can improve their score by 30 points, that they take the test again.
I hope the above is of help. If you would like, we also provide free 30 minute phone consultations here: http://www.stacyblackman.com/contact/
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