generally, your 2A rights are extremely limited in Illinois.
for the most part both CC and OC are prohibited to normal people outside of very, very limited situations.
no state pre-emption so you never know what draconian ordinance a locality might have come up with.
Chicago and a few cities flat out ban handguns for normal citizens. black rifles are also banned in Chicago and a few other places.
no resident can have a firearm or ammo without a state issued firearm owners id card. non-residents can possess, but it is a bit dicey because there are additional restrictions on non-residents.
downstate has pretty good hunting if that trips your trigger (pun intended).
I would say your best bet is go elsewhere if guns are important to you. schaumburg is not rapibly anti-gun but has become infected with the chicago mindset.