You mentioned that you'd like to stay possibly in the Texas panhandle area. Just a recommendation for Palo Duro canyon state park off hiway 40.
One of the best kept secrets in our travels. Check out their website:
www.tpwd.state.tx.us/park/paloduro for more details.
We just completed a 5000 mile trip with the
boler, going to Texas and back in a month. Travelling 2-300 miles in a day was quite restful, and left time to see a lot of stuff. On previous trips, 2 to the east coast and back, our pace was 3-400 miles a day. I found this to be stressful. Luckily, retirement allows us all the tim we want now.
A couple of things to watch out for: it gets cold in the mountains. Water freezes at night, and you have to watch your hookups/pipes etc. Make sure you have antifreeze in your tow car.
Also, Passport America, a discount rv campground membership, about $40/year, offers good discounts in a lot of campgrounds. Typical was around $20 or less, and all had bathrooms, laundry and other amenities.