Hey Darkfire, good write up. I have one thing to add though; I'm doing mine now...
When you get the connectors out of the original transformers, be sure to get as much of that black glue crap off as you can. It flakes off with a little help from a small knife. I made the mistake of leaving some one, and when I tried to plug it into my new transformer, it just forced the male end of the plug back into the housing... I'm still trying to figure out how to get it in there! =(
Goal: To have as much fun building the car as I do driving it.