If med school is your ultimate goal, then try to find a place where you will graduate with near perfect GPA and be at the top of the class. Med school admissions is highly dependent on MCAT and GPA.
So by going to a lower ranked college, it actually will probably help. Especially if you’re near the top. Going to a place like WashU you’ll be competing with a lot of other gunners. Also known for grade deflation. A 4.0 GPA from small liberal arts college is better than a 3.3 from a prestigious place like WashU or Rice.
Going to a smaller college also helps with more personalized letters of recc from professors. And with your stats, you will probably get merit scholarships. Keep the total cost for undergrad as low as possible.