Entrepreneur Applying to Business schools-Some apprehensions

I run my startup and some of our products are fairly popular in our space. I'm doing this startup for the last 4 years. We are just two cofounders and have currently $50k in annual revenues in INR. Scaling up is becoming a major issue though and I intend to take a step back and go to a business school this year, run the startup on the sidelines and also explore new business opportunities with peers. Yes, I am a very entrepreneurial and I won't be surprised if I end up becoming a serial entrepreneur

The biggest advantage that I have is that we have actually built products and have had more than 15000+ customers so far and have a lot of interesting things to write in my essays.
I know business schools value startup experience but I'm getting very paranoid about the following two things

a) Would adcoms be any impressed by the fact that we are just two co-founders running the show? I ask this question because adcoms are looking for leadership experience, the size of the teams that directly to report to you etc. We do have a lot of freelancers working for us .

b) Whom should I get recommendations from ? We are purely a product company so our clients don't know us that well. How about taking a recommendation from the co-founder ? Would it look bad ? Also how about taking a recommendation from a mentor who knows me quite well and has been occasionally advising us.