I think you have the kinds of profile attributes that will make you attractive to your target schools: Top UG institution, great GMAT score, good work experience and a demonstrated record of broad involvement in school, sports, work and community. THe entrepreneurial stint will also make you look like a true business person, who has potential to lead and innovate. The key will be in how well you are able to tell your story in a way that makes you stand out as unique and positions you well against others in the applicant pool who have similar characteristics and backgrounds. Conveying passion about your family business and how you will use what you learned in banking to help the company succeed will be vital. Please let us know if we can be helpful as you pull it all together.