There are several ways to make "Standard Brick Pattern Blanks." I actually think the OP is working with one of the more difficult methods. It will certainly work with his method, but I agree that there are easier ways. But, find a method that you are comfortable with, and refine it.
I did two classes at the last MPG on making these, I will be happy to share the handout (via, PM and e-mail - the file and photos are difficult on IAP treads). And there are probably zillions of UTubes, and Barry Gross' book has an excellent section; although he has a few different methods than I, his may be more accurate.
Have FUN!
EDIT: Gary was faster than I; got distracted looking for photos. What Gary noted is the same as what I was suggesting.