If you want to be in Chicago go ahead and apply to all of the programs. The score isn't the greatest, but you can still make it up with your EM rotations and your clinical grades. I would definitely recommend doing a rotation at any chicago program your interested in. Also, take step 2 early if you get the chance.
The nice thing about EM is that programs don't look at numbers alone, so it gives you a chance to sell yourself with your intangible strengths. If you have questions about specific programs feel free to PM me, or you can also do a search on Chicago programs, this has been talked about atleast the last two years.
Charlie