Man, I wish I could answer that question. I've found that admissions people are quite willing to spend a minute with you. I've had 30 minute conversations with the director of admissions at various top-10 programs. They've called me back within half an hour each time. They'll always talk and answer questions happily until I finally end the conversation. Be bold. You're going to business school.
I think if you lay out your quant scenario in 30 seconds or less, you'll either get a "You should be fine" or a "You probably want to use you extra essay to convince us". They'll never encourage you
not to apply, so if you get the latter, I think you should count the school as a "reach".
Alternatively you could try your hand at the online fortune tellers. They're always happy to advise.
I saw your 740. Geez, almost anyone would kill for your score. I don't think any school is going to deny you for lack of quant. They're going to look for a way to accept you because of your overall score. I don't care what anyone says, you're going to get preferential treatment over a Q42 with an overall 710 every time, even if he has four A's in advanced Calculus. If it were me I would forget about it and write awesome essays.