While I can’t choose a school out of those, because I am not familiar enough with Washington University in St. Louis or JHU or the pre-med track, I will offer comments to specific points.
- I've heard that the UChicago campus is safe, so I wouldn't worry about safety there.
- Do you want a liberal arts education or a pre-professional one? At UChicago, you would definitely get a liberal arts education with the Common Core. I got a very pre-professional vibe at Washington University in St. Louis. I'm not sure what the education is like at JHU.
- Go to the admitted students day for all these schools, especially UChicago. You may get a very different feel for the school in good weather.