What's your ultimate goal?
Honestly, you're too old for investment banks. They hire in the 22-26 age range and keep them until about 30; I worked for Morgan Stanley, and from what I understand, it's standard practise. Usually once you hit 30 you manage the traders, balance the books, etc. Most guys burn out by 30 anyways, and from your experience, you probably know this all too well.
But about getting into BSchool, I'm pretty sure you'd get an interview to any school you apply to. Letters of references are for people who worked in a company and haven't made any $$; if you have a profitable business, well, that's the name of the game
Just picture yourself as a BSchool admissions officer- in one hand you have joe schmoe from India with bad English, 700 GMAT, terrible english, 4.0 GPA, super inflated resume, etc that's just going to become some mid level manager at some company and never go anywhere, and then you have some guy who's running his own trading company already raking in several hundred K a year...... quite an easy choice.
best of luck