+1 on Kanab being a decent option for airbnb lodging. Moab and St George are the other options. You can find airbnb in other areas, but the best selection is going to be in those spots. As you are coming from Virginia, you should absolutely reset your comprehension on driving distances. and the dearth of services out west (I am originally from TN and I still find it bewildering how far it is between places sometimes). Here are my thoughts:
- I agree with other posters who say to have some things scheduled, and leave some blocks completely open.
- Accept that you will have to miss something that you think you really want to see. Don't look at it as a disappointment, but rather an opportunity see something you have never heard of.
- Related to the above, it is not hard to find really amazing scenery. The stretch of I-70 between Denver to I-15 is full of drop dead scenery without ever leaving the interstate so don't over-focus on the high traffic areas.
- Related to the above, Yes, the NPs are popular for a reason, but there does come a point where the crowds and waiting kill any semblance of enjoyment.
- Consider less obvious options. Escalante, Capital Reef, Canyonlands and lots of areas in between all see less traffic than Arches, Bryce, and Zion. Since you are in a 200, it opens up a whole world of options. You don't need to go hardcore Offroad to find amazing places in those areas. You may not be able to escape the crowds completely, but it is amazing how a dirt road acts as a filter. A little research can go a long way.
- If you do consider Kanab, the North Rim of GCNP is within easy reach. It won't be empty by any stretch, but it is much better than the south rim.
- Consider renting a boat or kayaks or canoes and spending some time in Glen Canyon. The water isn't as high as it used to be but there are still great hikes you can only get to by water and that also filters out the crowds.
- Always, always, always carry extra gas and water. 20L of each. Don't underestimate this, even if you are always on paved roads.
- Go ahead and get a Benchmark atlas for Utah (and possibly CO, NV, and AZ), and consider something like a Garmin InReach. Paper maps are king as you will definitely spend most of your time without cell phone service.