You certainly have a shot. In fact, I think you have a decent shot to be honest -- yes, the only handicap potentially would be the GMAT score, which is skirting the bottom of the middle 80% distribution (80% of incoming students have scores roughly between 680 - 760; 10% below 680, and 10% above 760), but in your case I don't think it's going to be as much of a handicap given your exceptional GPA (can't get any better than a 4.0) and since that you're "young" I'm guessing you graduated within the last 4-5 years, which means your GPA will be a good counterpoint to the GMAT. And it goes without saying that you have compelling and unique experience that adcoms would really love. In a way, between HBS, Stanford and Wharton -- HBS is the most forgiving of lower GMATs if the rest of the candidacy/application is exceptional and compelling. Stanford loves high GMATs, so they may be the most likely to pass on you of the three. Wharton loves high GMATs, but given your background, they are more likely to overlook it.
So it really comes down to the written applications and interview, and choosing schools you really want to go to.
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