All you need is a decent college with a wide range of majors in case your interests change. You probably already know that you can major in anything you want, and still get into med school. You don’t need a premed committee or premed advising - you can get your info elsewhere (student doctor network and reddit), and it may even be more accurate than what a premed advisor would have told you. You do MCAT prep on your own or you take a class if you feel it would help you. Colleges don’t offer a class in MCAT prep.
I would not recommend RPI for a person who is absolutely sure they want medicine, since it is primarily an engineering school, unless you are determined to be an engineering major (and with that usually comes lower GPA). Of the above schools, I would say that Pitt stands out, because it is close to and associated with major teaching hospitals, so you’d have opportunities to shadow, maybe even scribe, plus it’s a research institution, affording you the chance to do research.
Rochester is another possibility, for the same reasons. I’d go with the cheaper of the two, unless you have a personal reason to prefer Rochester over Pitt.