Thanks for your post. In regards to the GMAT, for the programs you are applying to we would recommend you take the GMAT again. One thing that is important to remember is that in your business school application, your highest GMAT score is self-reported. For this reason, admissions teams focus on your best score, and there isn't any harm in taking the test again.
For your application, I recommend you read this case study of a Big 4 accountant who was accepted into a top MBA program. It should provide insight for your candidacy: http://www.stacyblackman.com/2011/09/08 ... eer-goals/
If you'd like, we also provide free 30 minute phone consultations here: http://www.stacyblackman.com/contact/
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MBA blogger, US News and Author, The MBA Application Roadmap