Hey BD,
Sounds like you're at a great stage in the re-build. Very exciting for sure. I do a lot of RV plumbing, and I have been using Sea-Tech fittings and tubing on a regular basis with great results.
PM me if you're interested in more details!
Also, have you considered a couple of solar panels? I just became a dealer for AM Solar, and after researching several systems out there, theirs seems to be of very high quality and at the top of the heap.....so to speak.
Keep us posted on the progress of the Argosy.................
