There is no harm in applying, only harm in getting your heart set on one school. So of course, go ahead and apply but find other schools you love as much and apply to them.
You list “executive on a medical related organization” twice. What does that mean exactly?
I don’t think admissions chances are as easily quantified as Gibby’s post implies. Admissions is “holistic” and looks at the whole person as much as possible. Also it is not about the individual so much as what you bring to the mix of the class. Harvard wants to assemble a diverse and interesting class.