You are correct sir, drivers side is predominantly a slide for the fridge. It has been more of a hassle to think through than I'd like to admit but I'm getting there. Because my fridge, and I'd assume most, is fairly tall it makes for an interesting challenge on where to place it. I wanted to be able to access it while driving yet also get to it when set up to camp. Add in the desire to have at least some area on top to lay larger flat stuff and its been interesting. I did come to a new decision yesterday for the passenger side of the set up. I was originally all gung ho about making two shallower drawers for that side but decided against it. I honestly just couldn't justify all the extra work while basically limiting what can go in each drawer due to size. One full size drawer seems a much better idea as I can always subdivide it internally as gear changes.
Not having a metal brake is one of my biggest headaches. I could have saved a LOT of effort and energy, not to mention fabrication time, If I had simply been able to buy a couple sheets and have them bent to the drawer sizes. Alas...I'm not that lucky so its made me construct the skeleton out of 1x and then skin it with sheet. That being the case I think the quality has gone down due to trying to learn to work better with thin sheetmetal and its odd tendency to act funny. :O
Still trying to work through the design as I go. You'll see its a little quirky when you build yours. And while I don't see any reason you can't keep your back seat...You may be surprised at how the "trunk" space disappears rather quickly.
I can totally relate to the problems one faces when you just don't have the right tool for the job. It certainly makes for interesting workarounds though. Since I'm just seeing the build through pictures on the internet, it's hard to tell for sure but I think it's looking great! Especially if you plan to do some clean-up sanding and painting once it's all said and done.
I plan to build my storage system with wood, mostly because metal fab is such a pain in the *** when you don't have a press brake or a plasma cutter. I like the system made by Drifta (AUS company) but I can't really see myself being able to afford that any time in the near future. They have a slide out "kitchen" system that basically sets up like a table to create a good bit of work surface. I'd probably build as low profile of a fridge slide as I could manage just for that quick beverage pull on the trail, but when set up at camp I'd want to be able to take the fridge all the way out I think.
You're right about the "trunk" space filling up quick though! We have taken a couple beach trips and just adding a big cooler, camp chairs, food, easy up, towels, the dog, etc... it was pretty tough to get it all to fit. Of course I still have a 31" spare sitting in the back at the moment, but I'll be getting a tire carrier bumper shortly to remedy that problem!
Anyway, I can't wait to see your system progress! Please keep posting up the pictures as you go along, I'll be following this one.