our family of 6 will be heading west from philly this summer in our Land Cruiser, we have about 14 days to do as much as possible, we have camped before, and can handle long days in the car ok(trips to disney and st. louis)although i dont want to have long rides on consecutive days, we want to try to see the grand canyon and zion and the likes at not too breakneck pace is this possible in the time frame we have or do i have to shorten the trip up a little. any suggestions would be appreciated