If you provide any services(stand sites) you need an outfitter license and insurance.

You can legally show them the boundaries of the property and any potential hazards. That is about it. You can't even tell them where you have seen deer as it could be construed as providing hunt advice.

IMO, 40 acres is pretty small for a hunt even if it is all woods. It would have to be awful cheap to get a single, let alone a group of guys interested.

You may have additional problems if they branch out and hunt the surrounding Shawnee as that is federal property.

Good luck to you.