You have a similar profile to what mine was last year, and I received 3 offers including 2 top 50 offers. I applied to 12 schools within the 20 to 100 range.
I had the same GMAT score, similar industry experience, and a similar undergrad GPA. I went to a state school, which was probably more recognizable than your school, but it's a top 75 program so it's not blowing anyone away. Are you a native english speaker? Right or wrong, that's a huge asset when applying. Your math background is better than mine, I only had one calculus course and a couple of stats courses.
One thing that helped me a lot is that one of my LOR writers is well published for an Asst Prof and had connections with the schools where I was accepted. I think this is what set my profile apart.
I'd recommend a decent MS Finance program (that's what I was told to do if I didn't receive any offers). It doesn't need to be a top program, although that doesn't hurt. An MSF program will allow you to gain some research experience and exposure to finance faculty.
You may want to get over the 700 barrier on the GMAT, and raise the quant a bit. It's not a necessity (I received 3 offers), but I was initially waitlisted on 2 of the 3 schools that eventually sent me offers, and I think that was largely due to my GMAT.