I think he's serious.
From a purely aesthetic standpoint, I'd stretch it and tube out the bed. You don't have room under that bed for both axles, and clearancing the back of the cab would be an utter PITA.
I like the idea of bolting a divorced transfer case to the middle axle and driving that differential with planetary gears off the front output. Have you thought about what axles you're going to use? Quadrasteer on the rear axle would be pimp...
I say you start with making the front end solid axle... I think it'll look funny to have all that then be limited with ifs in the front.