Honestly, I think even if your application is insane in terms of ECs, you're still better off not applying. Duke's lowest accepted MCAT last year was 505, and their lowest interview was about 500 or 501 or something. That said, this year they don't plan on using MCAT for interviews (unlike last year), but they do plan on using MCAT for acceptances still. So even if your application is great enough for an interview, it's extremely unlikely you will be accepted.
Also, just a side bit of advice. Last year, I applied with little to no clinical experiences. The rest of my ECs were excellent. I still received a few interviews, but I knew if I had clinicals, I would do substantially better. Rather than get accepted to a school I would not be happy with (along with a family crisis that made me want to delay med school matriculation), I chose to withdraw from all medical schools that gave me interviews prior to decision and reapply this year. I am getting many more interviews from higher ranked schools much earlier in the cycle this time around. I know two people that did the same as me, and got into top schools the next cycle.
Your MCAT will prove a major barrier for you getting into top colleges and will strongly limit your potential scholarships, if your ECs and GPA are on par with T5 school. Personally, I would recommend withdrawing from this cycle and reapplying next cycle with a much higher MCAT score if you believe you are capable of achieving it. Even if you don't want to go to a top school, you might get a massive scholarship from schools a tier down.
Out of curiosity, though, what are these ECs?