So I switched just two of the blocks so that the dark ones weren't all on the right side of the quilt. I also added sashing and cornerstones around the outside edges. I think it's big enough now so I won't add a border. There is probably enough kitty fabric left to make another one. However, I'm usually not a fan of doing anything more than once. Maybe I'll try a Disappearing Nine Patch with the leftovers?
There are several bloggers working on the blocks from The Civil War Diary books by Rosemary Youngs. It's fun seeing the fabrics chosen by everyone for each block. I'm so tempted to start, too, but I have so many UFOs to finish first.