Advice on upcoming road trip

In a similar situation as you, my wife daughter and I saw the same sights but broke them into two trips. Granted, we drove from Florida, but I can't imagine seeing all of this in two weeks. We did a two week trip to Yellowstone, through the Grand Tetons, then on to Mt Rushmore (and Crazy Horse Memorial), Badlands, and Devils Tower. It was a great trip. On another trip, we went to Mesa Verde, Arches, Bryce, Zion and the north rim of the Grand Canyon. That trip was about 3 weeks, but it was a full trip. Fully understand the limitations of full time work (as I am not retired) but be sure to plan for an enjoyable trip, not a stressful one.