Have you checked into how long each campground will allow you to stay? If you plan on camping only and never taking up a permanent residence, you must be prepared to move around. You'll need to secure a place to receive your mail. Judging by your post, you are on the younger side. Although you may be able to handle driving more than 300 miles in a day (500 was the norm when hubby and I were in our 20s/30s), in retrospect I have to agree with those suggesting you keep your driving scaled back. Make the journey part of the adventure and try to enjoy yourselves along the way.