OK, because I didn't want to swipe the Intellipower converter from my workshop (too useful for charging batteries using my DC-only chargers), I purchased another. I bought this one this morning for $165 to include shipping. It's reputed to be new and unopened - we'll see.
Progressive Dynamics Inteli Power RV Converter Charger 80 Amp 9280V | eBay
Meanwhile, I am thinking of buying an automatic transfer switch like one of these.
Automatic Transfer Switch - PPL Motor Homes
This, instead of relying on my remembering to do it manually. Thoughts?
What else am I missing? Come on guys, I know there's more to this than I have thought of thus far, what about breaker and fuse panels, load balancing, monitoring battery condition, etc.?