Stay out of IL, if you can!!
#1 Rule--If you cant then make a successful passage. A successful passage is where your shoe dont touch IL soil or pavement.
#2 Rule--Dont spend any $$-no gas, food and sure no lodging.
#3 Rule-email several major cities Visitor Bureaus and tell them the plan-and WHY!!
#4 Rule on the return trip do exactly as in 1-3 above..