This is the entire original adventure path, revised, expanded and updated to current Pathfinder rules as of 2016. It's 478 pages!
The old AP and player's guide are no longer valid.
I don't know yet whether this should all be in a single PCGen source or split up into chapters. I'm leaning toward divinding it into chapters since that will help isolate spoilers of equipment and other rules that get introducted in later chapters.