Have fun! I did a trip out west when I retired from the Army in 2015. Flew to my brother's place in Montana, then meandered through Glacier, Yellowstone, and Grand Teton NPs, then to Salt Lake City. Continued to Great Basin NP (a little-known gem) and then met up with friends in Reno. From there I went to Yosemite NP and made my way to San Francisco where I met up with more friends and ran the half-marathon before flying back east.
It was a great trip and seeing your plans brings back fond memories!
Looking forward to doing the Grand Canyon and the Utah parks in the near future.