Final Update
Choosing the fabric from the UltraLeather website took some time. We'd pick several and Lisa(FlexSteel) would send us swatches to pick from. On the third set of swatches, we had our final choice. Buckskin (T61-80 or 535-3134 on the website) It took about 3 weeks for FlexSteel to return the 4 sets of coverings to me. (Sofa Jackknife, Sofa Extension, Dinette Left and Dinette Right.
Before placing the final order, I removed the left dinette seat and broke it down to be sure that I would be able to actually handle the job. It seemed straight forward.
It probably took the longest to carefully remove the 1000's of staples in each piece.
When I had questions, Lisa said she would be available to consult. This is where I learned about "hog clips", I found hog clip pliers and 150 hog clips on Amazon. That was enough for what I needed.
Lisa also advised me that the corner piece for the sofa was too large to fit through the RV door. The breakdown and re-upholstery for this piece took place in the coach. All of the other pieces were brought back to the house where I setup a worktable to remove and replease the coverings for each piece. Some pieces required a 2nd set of hands or 2nd opinion. Thanks to my lovely assistant, Mary, for being available when needed.
The job is done and we are very pleased!
Thanks for the tip.