LOL. Fair enough. This is where I am as of today I re-arranged a bit so it will be closer to the panel layout:
Inverter is not shown...yet, but it will attach where the 2/0 cables from the house go. I have all the cable, terminal lugs, switches, 12V distribution etc on order. Spent last night figuring out all the terminal lug sizes. Found a great site for those items as well as marine grade wiring. I think the wire is unbranded Ancor.
http://www.bestboatwire.com/
I got 8 gauge cable, all my terminal lugs, heat shrink, and 200 feet of 16 ga wire for the price of the ancor lugs alone on Amazon.
So 8 Guage throughout and why not? It was relatively inexpensive. I went with Blue Sea class A breakers as they are also rated to be switched and have a pretty good AIC rating as well. Terminal fuses on the battery sizes which are the second best next to Class T fuses. Trying to arrange for minimal contact points and lugs Using the switch terminals as single point bus.
As you can see, Shore Power is still a mystery. I know I need a plug, some three wire marine type cable with insulated ground. I am just not exactly sure how to bring it in safely yet.
My guess on shore power is 30 AMP plug -> Breaker (GFCI??) -> Transfer Switch? -> GFCI receptacles -> Loads. I am unsure how to ground etc. 120V is nothing to mess with and I don't want to electrify the van!!
I am dang glad I laid this out though. I would have forgotten a million things and had all the wrong lugs and have been missing multiple items.
Still need to order the shunt and the Bogart sensor cables for now so I can pass them through the van floor to the house.
The tricky part is going to be making the panel face with all the switching and meter etc with a cover so that my 4 year old twin boys can't mess with it.