Hi HeyAbhi,
Thanks for writing in. Your experience with the energy nonprofit is unique but you will need to show other strengths as well in order to be competitive at the schools you are targeting. Unfortunately your college extracurriculars are unlikely to hold much weight with the admissions committee since you will have been six years removed from college; they want to know how you have been active in the community since joining the workforce.
Given the level of school you listed, you may want to look into taking a practice GMAT or two to see if a higher score is possible, otherwise you will likely be at a competitive disadvantage.
Best of luck,
Daniel Richards
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