Again, I apologize for taking so much of your time. If I had done the proper search on your site I might have saved you both a lot of time.
Talking about learning from other experiences… The issue I had was described on a post dated Oct 2024. The person had done exactly the same steps I went through. It seems they have solved the problem by having two separate profiles.
One profile, for printing, using the gray ICC profile created by the PiezoPro. Another profile, for soft proofing, by using the RGB ICC created by the QTR. We are both using Lightroom. The only issue that is left is the detailed steps on the printing. I outlined the steps, but want to make sure I did it right. The steps outlined seem to get me far closer to what I need to do. 
The post is here: How to create an ICC profile for softproofing in Lightroom
Thanks!