you seem to have a good overall profile. well balanced, good GPA, good GMAT. unfortunately, there is no way to quantify what your chances are anywhere, since we don't know how the adcom will view your profile. also, a lot of it depends on your LORs and essays. on paper, you could have the best statistics, but if you dont convey your message well through your essays, it won't matter how good your GMAT, GPA, WE are.
the only other advice i would say is to go into detail and do research on your targeted schools. 7 schools seems a bit high to me, but others have applied to more (which i think is a waste). i'd say 4 or 5 schools - done carefully and thoughtfully - should be all you need.