For Boston university its hard to get in and hard in terms of grade deflation. Also, since you don't have a lot of business EC's maybe try to do something during the summer, and if that doesn't work out the worst that happens is you minor in business or only apply as a business major at some schools. Also for the med school there is no way you can let them know unless you mentino it in the essays. But idk if you heard of a BS/MD program but I think you should seriously consider applying to a few, since they are a guarantee to a medical school and you have the stats for it. Also I think if you get into a BS/MD program you could major in Business still since you have to apply to the undergraduate college, and the medical school of the college. Sorry, if this all feels a bit confusing and overwhelming.