Welcome to the Forum!! Welcome to RV'ing!! I hope your travels will truly be wonderful for you!
Have lived in UT for almost 50 years. From State of WA, currently here, in WA, with my rig visiting family. Amazing to me that MOST people drive the speed limit here.
Albeit, you will find that people in UT have a lead foot. Just stay out of the "fast lane", don't tailgate, and be careful going thru the road construction thru Lehi. As said above, from Provo to just north of Ogden, will be a LOT of traffic. (Listen to KSL News Radio on FM 102.7, and they give traffic reports "on the 9's". If there is an accident, you will hear of it.)
The fluke winds that hit SLC and toppled all of those trucks were not the norm. Albeit, Hwy 80 thru WY, it CAN be the norm.
Take your time. Enjoy where you are, and let the rest of the world simply "pass you by". We who live in UT absolutely LOVE IT! But WE do not even enjoy the idiots on our roads. You have picked the best route, in my opinion. The Rockies ARE stunning.....but I would throw a little caution if you are not use to exactly where you are going.
Happy camping! Safe travels to you and yours!!
Lura