OP, medical school applications aren't cookie cutter. If you have a passion for medicine, and you have idea for EC's, shadowing, volunteering, keep your GPA up, and get a good MCAT with good recommendations, you have a good shot, but everyone is different. I mean some people think that 300 hours isn't enough for volunteering. To some schools, it may not be, but in my experience, after a certain point, quality matters much more than quantity. Like, if you have 300 hours of volunteering at a homeless shelter 3 times a week over 3 years, I think that means more than 400 hours of pushing papers at a place like Shands. Perhaps thats oversimplifying it, just my 2 cents.