hi dstjonn,
i think you'd be strong for candidacy at both UW and UNC. haas and sloan will be a stretch. when i look at what you've written, here are my thoughts:
+ decent GPA
+ nice focus on career goals
+ solid letters of reco
+ good leadership experience and potential based on EC involvement
+ mission / higher-purpose oriented work
+ likely to have examples of over coming adversity (can't be easy to teach HIV awareness in MT?!)
- low GMAT
- work that's not analytical
- loose coupling of career goals to past work experience (i.e., how do you make this plausible?)
- young
- danger of "I/me/my" in your essays (based just on how you've written this summary)
- avg "strength of program" from USF (you were honors, but it's not the same thing as an undergrad degree from Yale, as an ex)
your goal will be to play up your strengths and mitigate your weaknesses thru your essays and the content info your recommenders can work from. if you can get your GMAT up, I'd say you stood a shot at Haas, since it's a program that's very socially minded. as it stands right now, I'd say you have a pretty nice mix of programs with Sloan being the obvious stretch. IMO, drawing a tighter connection between what you're doing and what you want to do postMBA will be one of your bigger challenges. the work you're doing right now could be interpreted as sales-oriented, whereas your career goals are more management/analytical.
Hope that's helpful,
-james young
p.s., if you're undecided on whether to take the gmat again, i wrote about it here:
https://www.thefirstread.com/should-i-retake-the-gmat/