Hi Jeremy,
A 760 is a great score. While the AWA score could be a possible ding against you at the highest-ranked schools, I suggest applying your writing talents to your essays instead and showing the schools that you are a strong writer that way.
By retaking the GMAT, you risk a lower overall score (you can't mix and match your score from multiple tests), and it can be difficult to repeat such a high score.
Good luck!
Daniel Richards
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