Guys, thanks for all the suggestions. We're from the flat lands of Michigan normal hills west seem a little bigger for us. The coach handles the hills well, engine brake serves well is starting in a lower gear. We have a week from Phoenix to Detroit and I want to be sure to show DW Rushmore, Crazy Horse (Not that big a deal), and some of the stuff once we start east.
I've been out here working over the years and have seen some but we'll hit the biggies on the way.
Thanks for all the help. The Cummins 300ISB is not a powerhouse but will get the job done.