Thanks for posting. I do recommend you take the GMAT again, as your score is below the averages of the schools you are considering.
With your GMAT score, it's important to remember that your highest score is self-reported on your application, so admissions teams will focus on your best score. There is no harm in taking the test again.
If you decide to take the GMAT again, we have some free advice here: http://www.stacyblackman.com/gmat-files/
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