Addendum: Lamplight Equestrian Center is in Wayne IL, not St Charles - just a little further north. And KYB relocated to Florida as of early 2018, I believe.
All that said, to the OP: I suspect you are going to be looking at a drive of an hour+ if you are going west, south, or north-west. St Charles/Oswego/Wayne, Barrington, Maple Park, McHenry - these are all areas that have what you are looking for but that is quite a haul for you. You may want to feel out what is the easiest direction for you to go at the times you would be driving, and search along that route.
There are some very active Northern Illinois facebook groups - they may also be a great resource for you with this.