psgramps, thanks for the posts on the sink/water. I have just finished my electrical wiring, and will definitely add a PVC riser for the reasons you stated (too busy having fun to consider water in the galley 🙂
We are still undecided on the addition of a sink. We were able to salvage a sink from an old travel trailer and are considering installation. It has a handpump, so it would not be as complex as your setup.
Would you mind posting some pictures of the guts of your system? Specifically, some interior shots of the tubing underneath, how you mounted the blue and runs into the gray water tanks, and how the fill system works. I’d like to get an appreciation for the complexity.