We came home through NE and CO. We have friends in CO so we went out of our way to see them but came home through Pagosa Springs and hit the hot springs. We wanted to come home through UT (Moab) because following the river in Utah to Moab is gorgeous and we wanted to camp along it. But my husband didn't want to drive the continental divide to Breckenridge with a new truck and trailer. Turns out now we could have done it easy but we weren't sure at the time.
If you can, you'll win romance points with your wife if you can spend extra time in IO by visiting the bridges of Madison County. Imagine me leaning out the window at the sign as we drive by because we didn't have time....
We took 8 days to drive and visit two friends on the way. We drove from here to OK City, stayed with friends, then straight up to Des Moines from there. Then through NE to CO, Four Corners, and home. It was hard with three boys in a crew cab Silverado but that's why we took breaks to visit. And that park in NE was great for them. Stay at a spot near the lake.
Hope that helps!