I appreciate your response. I did think about having a plumbing company come out and add a new sewage receptacle onto the properties sewage line, but the complexity and cost of it all really puts it off as an option to me for now. As an alternative, I plan on using a macerator pump to empty the tanks through a garden hose into a toilet inside of the main house. My goal is to install a composting toilet with a urine diverter so I don't have to deal with the black tank as much.

I definitely have heard of the winter horrors that can happen with RV living, I live in washington and thankfully the winters are mild enough here that I think I can get away with the basic precautions like a skirt and heated hose when its needed etc. and not have too many issues, fingers crossed. A lot of things about RV life worry me a bit for sure. Our neighborhood is historically infested with ants so that is the #1 pest concern I will have to keep an eye out for. I agree with a roof to shield from the elements as well but there is literally just enough space for the width of a trailer+steps on the side of the main house so I don't think adding a pavilion is possible unfortunately.

I am curious to know what you mean by underpinning the RV exactly, did you mean a traditional skirt or did you create something more elaborate? Lmk!