To address your question about the Part one, chapter 1 ect I also was looking to do that and posted in another post how I found what I was looking for:
To quote: "So for my example I found an example of what I wanted to do; have "Book1" with child "Chapter 1" ect then "Book2" with child "Chapter 1" ect in my copy of
"White Fang" by Jack London (from FeedBooks) that was already in my library. (but is it a GOOD example of how to do this? I'm assuming so but you tell me.)"
So take a look on how they do it in White Fang (shows up properly in the TOC) and that should answer that part of your question.