Hi PB -
By now, maybe you have already read the stages course material, maybe not. While there are quite a few books on your list that I would like to read, the stages course is not just about the readings. That's why it is a course. I think Bill would rather keep it as more of a transmission. And above all, I believe that he wants us to practice and incorporate these lessons. There are lots of interesting things out there. But actually working on ourselves and starting practice is what he wants to help us achieve.
Neil