I really didn't want to jump into this, but I now see that maybe I should.
In all of our travels, we have probably paid for only a few dozen campgrounds aside from those where we attended rallies and then had zero choice in the matter. That situation has made me very sensitive to private space. Many of the campgrounds were we attended rallies worked very hard to earn the term "cramp ground". Some were as a writer posted were arranged so the neighbors slide (we don't have) was right at our window or door. But worse still to me those times when their sewer dump was so close to our door that it had to be watched for when entering or leaving the coach.
I would hope that you could afford some space, Wisconsin is not high land value, but I do not know how taxes are there. If you can, offset one slip (I am a waterman) from the other to avoid the utility crowd issue.
Another to put in the plan is that you have a slip inventory available. So, if a guest wants more space for a slide or awning, you van offer it (with an expected surcharge). Just make no issue of it. If the guest has a 102" wide coach and 4' slides, he can deploy them if he chooses to do so. You may find that a good portion of the owners have do not know the actual dimensions of the fully deploy rig.
You can also have trees and have that in the inventory so you can offer satellite ready slips. I happen to like trees more than I like television, but I have heard about this enough.
If you do have WiFi available, please make it clear that it does not have the bandwidth for streaming (IPTV). I no longer even try to use any campground internet as it has never seen any that was capable of more than simple e-mail.
Oh, Yeah, I almost forgot...
Have a number of slips prepared to cold weather guests. So, those should have heated water taps and metered full 50amp power. I am not sure what else goes with that, but we used to do most of out travel in October because of DW employment. In the north, freezing was an issue.
Whatever, I wish you great success in this enterprise.
Matt