Great Basin is nice to see, but sticking it between Kodachrome and Capital Reef seems a little out of the way. I would save it for another trip and explore some slot canyons in Escalante Grand Staircase National Monument. Lots of boondocking spots in this area. Lots of Ancient Puebloan ruins in southern Utah to explore as well. Here is a very good website to help with your planning. Just click on the state you want and this will provide you with a lot of opportunities in that state.
The American SouthwestI have visited quite a bit of sothern Utah and love it. So much to see. You could easily spend all your time there. Feel free to check my blog if you like. I have a link in my signature block.
If you are into hiking and getting off the beaten path an excellent book to invest in is 'Canyon Hiking Guide to the Colorado Plateau (Non-technical) by Michael R. Kelsey.
I'm sure you will want to go back again after visiting once.
Have fun.