I agree that it is an important logistic to understand how all yours wires are going to connect to the right place, but when I actually light heartedly say that something HAS been tried before, dont assume that I am a newb or the mental capability of a 2year by telling me HOW a specific iron should be used, when I have already said they have been tried and found useless, thats why the mute and blunt point was made. If offence was taken, get off your soap box.
As for the car, I would assume that people would end up making possible modifications to the top deck and run the esc fixed to the top deck, so if you want to run corally connectors (euro), then it won't be so much of an issue.
The fith body post will also help the body and screen from deflecting in high speed situations I am guessing, I have seen other people run that before.