After a great deal of time and effort, I found revisor to be completely inadequate. It has numerous issues that prevent it from performing the intended functions. I used liveCD-creator as the tool to create the custom LiveCD iso images that I need instead. I was able to create a custom built package set and resulting image for x86_64 in a much more reasonable time frame using liveCD-creator. Revisor was never able to fully accomplish this task.