I certainly wouldn't expect to flush on an inverter. Since it's just me alone, I don't expect to have a crowd of beer drinkers flushing every ten minutes and figured the generator could be pushed into use if I am not tied into the umbilical cord ashore, for flushing.
Eventually, I plan to be in some remote locations that may not have typical motorhome amenities and the thought of never having to deal with black water waste was a wonderful idea indeed.
I lived on a sailboat for a decade in the islands that very rarely ever saw a dock, and survived off a small solar panel for years. 12 volt systems are something I do understand (and wish I didn't!). I had to rewire a good bit of my old boat anyhow and pray I don't have to rewire a thing on this RV.
I was recently depressed to learn my trusty volt meter died, and I've only used it for 20 years...
Overall my elderly RV (circa 1994) seems to be in good shape with all systems running, so I'm not planning to change anything until I see "how it goes" once I get traveling.
I do have this real bad habit of looking at it and making mental wish lists such as; I need 12 volt fans, I would love to rip out the original carpet, they make more useful faucets now, the propane tank needs derusting, painting and so on... *giggle*
Thanks for your input.
Ironically, I just ran into an RV owner, who had changed over to an incinerator toilet and loved it, though she always lived in a campground with full hookups, so I am kind of puzzled as to why she bothered with the change over at all, and must think to ask her that when I speak with her next.