First, my hat's off to you sir for a truly incredible build. Second, thank you for taking time out of your build to post, share ideas, and explain things. Third, I am chock full of questions.
I have a 2000 BBAA RE with a Cat 3126 and thought I had it all planned out just working on details until I read your build. I too am doing a roof raise, 12 inches. I am most curious about the Nissan Leaf battery bank.