It really concerns me that you say that you want to “go into Pre-Med”, and that you think rankings are important to your goal of med school. There is not a single degree hanging on someone’s wall that says they graduated with a B.S. in “Pre-Med”. You can major in history or ballet and apply to med school. Also, all the med schools in this country (as was pointed out they are all quite credible) are filled with people that went to schools not highly ranked by USNWR, which I assume is the ranking system to which you refer.
Just find a school you like better than the others based on location, size, special programs, friendliness as best you can tell from what you hear and read, etc. Whatever is important to you except ranking. Ugh. Then get a great GPA, especially in the required Pre-Med courses, and do well on the MCAT. Doing some research might not hurt, but you don’t have to. But you should get involved in community/charity work.