Okay, my opinion is that unless you're on a generous scholarship or have super-rich parents who are wiling to pay for your undergrad bill which will be quite large come the end of four years at Notre Dame, go to a cheaper school. I'll say it again: if you are strongly considering going to medical school, find a cheaper school, i.e. your state school or a school that you have nearly a full ride to.
Med school is expensive, really really expensive, and one of the best decisions I made was to go to my no-name state school where I have graduated debt free. I'm now entering medical school this fall, scared to death of the debt I will be accumulating and only wondering how much more screwed I would feel if I had another $100,000 of undergraute debt to carry. I screwed around there for two years, got my act together, did very well, took the mcats (which kind of kicked my ass, but I ended up doing okay), and ended up getting into my first choice, perfectly respectable medical school. It is not in the Caribbean.
Look, organic is organic, chemistry is chemistry. You're learning the same basic sciences as everyone else. You think that Harvard and Johns Hopkins are the only institutions with good professors who teach science courses the "right" way. No way. Every school has its strengths and weaknesses, every school has their good professors and bad, excellent and poor courses. Ask your upperclassmen to help navigate your way.
Does the name of your undergrad matter? Sure, but it's like 20th down the list. If you go to a no-name school, do well there, nail the mcats, and aren't an dingus, then you will do fine getting into medical school. Do not overestimate the prestige of your school, or you might end up in the Caribbean or something. Good luck, and study hard!