I can help as far as the extra valves go... when travelling, the extra weight of water in the drain lines creates a stress on joints, connections and the hangers. Closing the one closest to the tank first when you empty leaves the drain lines empty and therefore lighter on all those parts. Otherwise these extra knife valves are redundant.
Not having any experience with motorhomes, I can't help on charging systems, etc. But there is no shortage of good folks here and in campgrounds around the country that will offer their advice on all that. Some tech articles in RV magazines would be a good resource as well, as would the Good Sams magazine.
83 sweet sweet days camped in 2008 - not easy in my neck of the woods!
- Salem 401-2b; 31" Sony Trinitron and two channels on the antenna.
- Smokin' hot wife... 2 boys, 25 and 10.