I got the braiding done and arranged it to have a preview. I am going to secure it and sew the parallel braids together. I haven't decided how to finish the short edges.
Here are some more details. I started with 1 yd long suiting fabric scraps not big enough to make garments. I did a small sample to get an estimate of how much material to use. To make ripping easy, the strips are 1.5 to 1.75" wide. Roughly the braid area is reduced to 1/8 to 1/10 from the original fabric yardage. I wanted the rug to be a certain size so I calculated the amount needed for each color. The repeat is AABA'BA'B with the A and A' being darker colors and B the light one. The width, pattern and tension need to be consistent during braiding, otherwise the larger pattern wouldn't be as neat.
I got to rest my fingers for a few days before starting the next project!