You don't state whether you have a toad or not. You will need one as most of the parks you want to visit are not conducive to driving a 40'DP around the roads once you park in a site. We live in the West and have done these parks many, many times. most campgrounds in the parks you want to visit are not all that suitable for a 40 footer. Most do not have hooks ups and Arches does not have water available in the campgrounds. Go into all of these parks with empty black and grey tanks and full fresh water!!! Most allow generators for only a limited number of hours during the day. You will encounter very hot days and will be running your A/C for the allowed generator hours. YOU MUST MAKE RESERVATIONS NOW IF YOU WANT TO STAY IN THE PARKS!!!! ENJOY BUT PREPARE.