Oh good, another human that is as crazy as me.

Hey good luck with your build!
I've been working on my 2wd 18' Sunrader for almost a year now. Aaargh - a year! I swapped out the 1/2 ton axle for the 1 ton, gutted the interior and glassed in the big 26 holes left behind after I yanked everything out from the inside (not including all the little holes!)...including those front wrap-around windows that are notorious for leaking. (I don't want any openings on the roof.) I made new "studs" and "rafters" out of 1x poplar and epoxied them in place to be attachment points for cabinets and paneling...that won't ever come down. I researched all the different adhesives and epoxy was the only one that made sense. I'm almost done building a simple bathroom with sawdust toilet and pee diverter. It will be a "wet room" so I can use a black 2 gallon garden sprayer as a shower and hang wet wetsuits to dry. I'm now building the interior cabinets out of 1/4" ply. I'm glassing them in place with epoxy, and I swear, even though I'm building them super light aircraft/multihull style, you could hang your body off of the rear upper cabinets and they are as solid as a rock. Don't want cabinets falling off the walls on some long dirty washboard road down south! Its been a helluva a lot of work but fun cuz now I actually feel like I'm starting to turn the corner. When I'm done with the interior then I'm going to build a lightweight aerodynamic enclosed carrier on the top for surfboards, stand up surfboards and light stuff like fishing rods. After that I'm going to desmog the 22R according to the thread at YotaTech and then I'm thinking of "painting" the whole thing with white Monstaliner. I work on the thing for hours almost everyday and then spend a few hours at night online researching stuff like fridges, solar, batteries, etc., etc., etc. Yeah, long days but my plan is to head south and surf my way through Mexico, Central America and South America so preparing for that is what all the research is about too.
Currently I'm figuring out what fridge to get and how to store the solar energy. What are you going to do about powering everything? Do you know what kind of batteries you'll use (6 volt or 12 volt) and how many? I'm also wondering where the heck I can put the batteries cuz they are heavy suckers.