The quick answer is yes, you have a shot. So go for it. How MUCH of a shot is another question, but let's be honest, nobody has THAT much of a shot at either of these insanely prestigious and incredibly competitive program. But graduating valedictorian + your GMAT + your two internships + the McKinsey thing is definitely enough for them to look at what you are writing, so your profile passes the threshold of consideration.
I like the way things sound overall, and you sound like a serious and ambitious dude (which is backed up by the things you have done and the results you have gotten). So definitely take a shot at it. You have nothing to lose and everything to gain.