Although you have a compelling candidacy, I recommend you take the GMAT test again. Your current score will likely place you in the bottom 20th percentile for GMAT scores (Harvard Business School's average GMAT score was ~720 this past year). Your score will not immediately disqualify your application, however MBA programs like to see scores of at least a 700. If you decide to take the test again, remember that admissions teams will focus on your highest score. There is no harm in taking the test again, as your highest score is self-reported on your application.
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MBA blogger, US News and Author, The MBA Application Roadmap