What is the best route for a National Parks camper van trip in the Western US?

Start in Las Vegas, visiting Zion (2-3 days) and Bryce Canyon (1-2 days) in Utah. Continue to Capitol Reef, Arches, and Canyonlands (5-7 days) before heading to Grand Teton and Yellowstone (5-7 days). Visit Glacier (3-4 days), Crater Lake (2 days), and end with Yosemite, Sequoia, and Kings Canyon (5-7 days).

National Parks road trip Western US itinerary scenic route