OP, do you realize how competitive the NHSC scholarship is? I'd be willing to bet that unless you've made some significant strides in community service, and your grades are top notch, you won't get it. My buddy's girlfriend was wait-listed for the scholarship, and her extracurricular activities were out of this world. She had a 21 DAT score and dang near a perfect GPA. I'm not trying to discourage you or anything, but you should know that the scholarship is pretty tough to get. I also know of a few of my friends in dental school now that didn't manage to get the scholarship, and their stats are very competitive with excellent extracurriculars. In my opinion, factoring that into your decision is a stretch.
UMinn is a fine institution, OP. Congrats on getting in there. One of my fraternity brothers actually transferred out of Boston University to come back to California. He did not have the greatest things to say about the school at all.