Thanks for writing in and congratulations on a great GMAT score. As you recognize, you are part of a cohort that is heavily represented and has high GMAT scores by reputation. Given your average academics, lack of ECs and minimal work experience I would suggest looking in the top-20 range. To stick out from the crowd, focus your time on differentiation through your career goals and by doing the extra layer of research on your target schools to make a really compelling case why it's a good match for you. You could also pick a top-10 school as a reach, given your high score it's worth a shot.
Best of luck,
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