I live five miles from the Champaign airport and have done the Ohare, Midway, Bloomington, and Champaign things many times over the years. I've had my connecting flights to/from Champaign cancelled/delayed so many times that I never use that airport anymore. That's not to say that it isn't ok most of the time, but I prefer Bloomington or Midway. Ohare is a major hassle. Bloomington has free parking. All things considered, my choice is usually Midway. Midway has lots of direct flights, is smaller than Ohare, so it's much easier to get around. I'd much rather spend an hour driving from Midway to Rantoul than to spend an hour wondering if my connecting flight to Champaign is going to go - it's happened to me too many times.
Anyway, have a good trip, and remember to stop by and visit us in Paxton, IL - Illinois Skydiving Center - we're only ten minutes north of Rantoul on Illinois 9 and I-57. We'll have a Beech-18 Turbine there from July 31 through the start of the WFFC, so if you happen to get here a coupla days early come do some jumps!