After working on the starter and Mags, I did some more wiring. For the most part I was just working out how to route the wires.
For my B-day, among other things, my wife bought me the forest of tabs ground plate from B&C. I mounted this to the firewall above the battery. I think this will be a good location. It will be easy for me to run the ground wires behind the panel and the ground cable from the battery.
After I drilled the holes, I soldered the head of the pass-through bolt to the brass plate. This will improve the electrical connection and reduce the chance of the bolt spinning when the nut is torqued.