Watch out for some of the Outfitters in Illinois. Some are getting too big for their britches. Make sure the guides are local and not out of staters getting free hunts and using you as their scouts. I'm sure there are some very reputable outfitters there, but I have been to 1 and had several friends visit some others and have found some common themes. Feel free to PM and I will fill you in. This is not the place for it. Also, there is a website thatposts hunter reviews of outfitters called Hunting Information Systems... Read ALL very carefully.
I would go to Kansas or Iowa if I could go out to the midwest again though...
Good Luck!