Mike,
Thanks for spending the time to outline this.  It just re-affirms the fact that my original workflow is more than adequate for nearly all of my photographs.
This is a great forum for a great product.

Greig

Brian,
Thanks for the input.  I have been trying to save/print in Prophoto and it is a mess trying to keep everything straight. 
Where I get sidetracked is when I plot aRGB in Perfx Gamut Viewer and then overlay my Colormunki printer profile, the yellows and dark blues are outside aRGB color space.  I think your point is that they are likely never seen in a photograph and are likely not captured in the first place.
I think I will keep my "old" workflow as you suggest!
Thanks again!

I have been using the latest QImage for years.  I have been printing on an Epson 7900.  It died and I am now printing on an Epson P9000.  In the process of getting it calibrated I think I have found a flaw in my workflow that needs improvement for the best prints possible.  Here is my current workflow:
I calibrate my monitor with Colormunki
Then I develop icc profiles for each paper with Colormunki
I then put those two profiles in QImage Ultimate for printing (turning off profiles in Epson driver of course)

Now here is my image workflow:
Shoot images using Nikon D850 in raw with 14bit depth
Transfer raw files to hard drive and open/process in Lightroom
Once I get my "keepers" I export them from Lightroom using a low-res image with sRGB for web posting and export to jpeg with Adobe RGB full resolution JPEG
Print from those JPEGS as needed using QImage Ultimate.

Here is where I think I have a problem:  BY SAVING AS JPEG WITH ADOBE RGB AND PRINTING FROM THOSE JPEG FILES INSTEAD OF FROM LIGHTROOM DIRECTLY (using Qimage in Lightroom) have I potentially thrown out pixels because they were saved in Adobe RGB?  Because Lightroom is using Prophoto color space would all pixels printable by my P9000 be captured by changing my workflow?  Maybe this is cutting hairs/unnecessary? It's certainly easier to print directly from QImage rather than Lightroom.

This color management seems a bit complex and I want to do all I can to print the best prints possible. 

Thanks for any help/thoughts.

Greig