OK my system is fully up and running.
All of the Lightroom catalogs and photo storage are run from the G Drive pro studio drive. This drive is backed up daily using Carbon Copy to the OWC RAID 5 drive. On top of that, Backblaze backs the G drive as well as the internal computer drive to the cloud.
The internal computer hard drive is backed up to a separate SSD drive using Time Machine. In turn Backblaze backs up the internal HD to the cloud.
I just checked all backup systems and it is all functioning.
Bottom line, I am feeling really good about the decision to move to the MAC studio. I absolutely love the 5k screen for photo editing and I have the adjacent 4k screen for thumbnails. Operations in Lightroom/Photoshop move much more smoothly and effortlessly than with my PC. As a lifetime PC user I am adjusting well to the Mac operating system although I still occasionally get lost.
I now feel I have the best computer setup for me,
THANKS EVERYONE FOR YOUR KIND AND THOUGHTFUL INSIGHT. It has made it possible for me to navigate successfully through for me-uncharted waters.