Not at all familiar with IL or the area you are asking about but two things every hunter should do are:

Scout the area. Get out there long before season several times and learn the area, the deer paterns and learn deer sign. Pick a couple spots to take your stand for several different wind conditions or anything else that could interfer with your intial plan.

Practice with your weapon. Make sure it is in perfect working order. Ensure it is accurate. Sight it in and get extremely comfortable with the weapon you will be using far in advance of the season.