I can see where it is confusing.
I probably spent 5-10 hours figureing this out for each hour I wired.
Try and get a factory service manual off e-bay for cheap so you can see each diagram that your working on ,and a service manual from your exising car will also help.
But like you noted, one step at a time .a few good sites other than this one:
http://www.v8rx7forum.com/
http://www.californiafords.com.
I emailed you about 5 or 6 electrical diagrams and the vacuum schematic .
So, one circuit at a time , study the schematic and figure out what you need .
I'm sure your wiring will be easier than mine , such as your fuel pump may already be wired correctly.
I'm only running about a 102lph (rated) fuel pump, so your fuel pump may even work
Good luck, Stan