Compensation - $750 neg

I am in the very beginning of planning a 2+ week vacation around the country in a clockwise direction. I did a similar trip 6 years ago with a model (and her doggie) from MM. Basically my plan is to visit scenic locations and shoot outdoors in national and state parks, Zion, Grand Canyon, etc. Landscapes and beauty shots, some nudity when and where practical (without getting us in trouble). Model should be willing to help with driving and occasional equipment hauling. Ideally someone who is also interested in shooting along the way. More of a road trip vacation than a shoot, I will be visiting friends along the way, and am open to visiting model's friends as well should we pass near. Compensation is flexible, I plan to pickup lodging and food costs along the way, although it's going to be more Denny's and Best Western than Red Lobster and Four Seasons.
There is nothing written in stone with this trip, the length, starting time, places visited, nothing. I expect to plan the final itinerary with the model who comes along.