It's an easy 2WD road. Unless it rains. I would not want to be anywhere off the pavement in the preserve when it is raining. Even the paved roads can be flooded.
Easy 2WD does not mean you should pull an RV.
I wish I could make it, but I'm already paid up for camping the weekend before. I know the campgrounds well, and a couple of favorite hunting areas, but there is a lot of stuff that I would like to explore and this seems like a well researched trip.
I am going to remember this thread for future use.