I'd recommend placing a strong
emphasis on this project. It is something that you clearly are passionate about, it ties to your career aspirations, has a community service bent, relates to your family and is completely unique to you. What else could you ask for?
This is the type of thing that will truly set you apart and should help make b-school a near-lock. Nice work. This should be on your resume, mentioned in essays, mentioned in interviews, etc.
Let us know how it turns out!