USC Marshall MBA Recommendation Questions

Applying deferred MBA

I plan on applying to a deferred enrollment program at Columbia, Darden, etc.
I have not taken GMAT yet, but target score is 705
Held 2 internships at large pharma companies (Novartis, Novo Nordisk). Led group of interns to solve a real world problem Novo Nordisk faced in marketing, the team won second place.
I come from a stem background, degree in cell biology.
At university, I won a competition for best business development pitch. Currently in the process of developing/starting this company, but don't expect it to be officially started anytime soon.