I'm just saying if you intend on plugging in an inverter in the back, consider using a different plug and socket (or hardwireing it in). The cigarrette plug will fail pretty quickly once you put a decent load on it.

As for your wireing, I think you did great! I went cheap on most of my runs -- I have a single 10ga wire to the cab. I may have three outlets there, but I have to remember that I probably can't run all three with high-amp loads at the same time.