Download the RVPARKY app. It will give you campgrounds along your route real time as you travel. It also lists gas stations, Walmarts, Cracker Barrels etc. ..look it over and get familiar with it. That's what I use and it works great for me. What we do is start calling campgrounds about 3pm for stopping at about 4pm. We have never been shut out and not able to find a place to stay for the night. Be careful making reservations too far out because you may have to give a credit card to hold a site and be charged if you don't make it there.
Try to take secondary roads when you can and get off the interstate, way more interesting to go through the small towns and more opportunity to stop.
Don't drive yourself silly by putting in 12 hour days behind the wheel, stop to see what there is to see along the way.
Just curious though, a 2020 Class C motorhome doesn't have a built in generator? The rental doesn't have pots and pans that come with it? I understand not coming with linens.
Youtube has a lot of good videos on everything RV related. Look some up to review and learn.
