WOW. I'm excited to have found this thread.
I had seen your video of the install, Waterfowler41! Have a '16 Silverado Crew cab, just did the pro kit Eibach rear shocks and love them. I was about to start the front when I found this thread. I just ordered the Rough Country UCA's and plan to do a diff drop as well.
I'm gonna set the fronts at 3.2".
Gonna document everything on YouTube as well!
https://www.youtube.com/user/tominsky75/videos?view_as=subscriber