Cross Country Itinerary Feedback/Advice

I was planning to go south from Moab to see the 4 corners on the way to GCNP and then up to Zion. I was wondering if it made more sense to go to the North Rim. I was also wondering about 4 days with Arches temperatures. I was thinking about combining Arches/Canyonland/Dinosaur....whatever the kids were up for during those 4 days. It still may be too much time.

I'm driving a 2015 Chevy 2500 crew cab with Duramax Diesel towing a 2012 Jayco Jay Feather Select 29L (32 ft bumper to hitch)