You should combine a visit to Canyonlands NP with Arches NP and Capitol Reef NP. For a 2-week itinerary driving through 7 National parks in Nevada, Arizona and Southeast Utah, see this page.
Itinerary
Dead Horse Point State Park
Walk from Dead Horse Point to Meander Overlook and back. (5/5, Incredible View)
Start driving back out
Island in the Sky Visitor Center, stop at Shafer Canyon Overlook (quick stop), stop at Shafer Trail Viewpoint (quick stop)
Mesa Arch (3/5, OK) (1hr)
If you have been to Arches National Park, the Mesa Arch is going to feel very underwhelming. Visit anyway, at sunrise if possible.