Welcome to our little home on the forum and thanks for the post! First off - way to CRUSH that GMAT! You just made a bunch of people jealous!
So you're asking the right questions at the right time. Let me see if I can't get you some answers:
1) Your short term goals don't quite make sense - they don't need to be nailed down now but i don't see how "analyst @ data firm > finance > executive at data company" would work - something to munch on
2) Your involvement is sporadic AND sparse. It's great that you run and, as a runner, I know that takes a lot of time but it's a passion. But beyond that, it doesn't seem you have much. Tutoring is good, but it's on/off like you said and, let's be honest, donating blood doesn't count. See if there is something you can get involved with that is related to a passion you might have. Now's the time to bolster that part of your application
3) As for schools, Emory is a good option - they have a marketing / data analytics center that could be interesting. With your GMAT, you have access to a lot of different programs out there. I'd say anything south of the ultra-elites (the H/S/B/W) would be a good place to look. But a lot of that has to do with not only what you want to do in the short term, but also what's important to you. Here are two great free resources we offer that will get you started (and take a look around after, we have more stuff up there too!):
[How to Choose MBA Programs][Free, Detailed School Profiles4) You ask about aid at UNC vs Duke / Darden - there is some truth to that simply given relative rankings but to count on merit aid is always a dicey situation at best
I hope that helps!
Bhavik