I'll be honest: this theme is cliche. Most premeds tutor or teach, and we push mentoring throughout academia. You should be a teacher or go to education, including a year or so in TFA/City Year to impress your point (as many others have). We need passionate and resilient teachers more than we need doctors, one can argue.
Every school is proud of its curriculum. Every school thinks its mentoring system is outstanding. There is nothing that compels me to want to interview you if you put this up as a theme.
Please split the hours. Science fair mentor shows academic competency.
This means your file lacks service orientation. You may have done a lot of work with underserved students, but not in a way that brings you out of your comfort zone or that otherwise has nothing to do with your strengths as a student. Your file risks getting screened out until those hours show your true fit or purpose for medicine.
Do your want rural medicine? Do you want research? Do you want to advocate for patients? The activities outside of the academic-adjacent ones don't point to a vision to me. Am I missing something?