Congrats on the 760 GMAT, that is outstanding! Certainly that is a plus in your profile. Other strengths include the banking experience and definitely the start-up experience. Probably an Asian with Canadian citizenship will also garner more interest in terms of class diversity.
However you do have some weaknesses, as you know... the GPA being the biggest; good that you have an explanation that hopefully helps some. The other potential concern that could be raised is regarding your past experiences, 2 parts-- a) is he READY at this point for b-school vs waiting a few years? (note: average incoming student has 5 years experience), and b) there does seem to be a lot of job-career-experience changing in a short time, which can raise eyebrows/q's about commitment and certainty about your proposed goals.
So, overall it would be tough to provide much more feedback at this point; based simply on the info at hand, I'd say it wouldn't be easy to get into the top 5 schools due to those potential weaknesses. Not impossible, but not easy, even with 760. Outstanding, unique, compelling essays can help a lot, but it is a very competitive admissions environment at top schools. You'd probably have a shot, with strong essays, at schools outside the top 5-8 or so.
Good luck to you!
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