01sport, you'll probably get different answers from different people. As for my experience,
1. I don't charge from the vehicle, only from an outside power source (e.g. a covered socket box outside my house or campground power)
2. NEVER put a lead acid battery where gasses from it can be exposed to an electrical spark. I but my battery in one side of my tongue box, and the shore cable to the 30 amp main breaker to the other side, but the two compartments are sealed pretty good and the battery side is ventilated with two round plastic soffet vents in the end of the box.
3. 12 ga wire is the heavier and will probably handle most 12 VDC uses. My vent fan and lights are wired to 16 g wire, the rest (12 vdc sockets, etc.) are all on 12 ga wire. My lead wires from the battery to converter are 10 ga.
4. A converter probably isn't a necessity, but nice to have as long as the battery is on a multi-stage charger and the AC voltage is separate through the appropriate circuit breakers. AS stated above, I used the WFCO multi-stage converter/charger and like it.
5. Not sure about the answer to this one. I used nomex for all of my AC wiring, but would think stranded would work...what about it you electricians out there?
6. I bought a regular 30 amp shore cable (25' long) from WalMart. I cut off the receptacle end and wired it directly to my main breaker in the tongue box. The cable feeds out through a cable port in the end of the box to plug into a shore socket. The cable is for 30 amp sockets and I have an adapter for connecting to 15 amp sockets (standard house type).
