If you drive the route and it turns out to be iffy, just a suggestion, we used this route I made for our DFW spring cruise and everyone enjoyed it. I'm always down for finding new roads to drive though, so if yours turns out to be good, lets go with it.
114 miles and I think we did it in about 3 hours with a couple of stops.
https://www.google.com/maps/dir/871-...!1m0!3e0?hl=en