Thanks for those photos, Westend.
I just sent you a PM to touch base, for when I get to wiring it or run into other things. I'll be mining Cowboy Hilton too, I'm sure, and do hope maybe you can add your photos back to it, some along.
What I'm going to do is have a low-high-low set up, with a small extension over the tongue. Before your advice above, I was indeed going to center the kitchen over the axles and (oddly enough, lol) actually split it, with a step down to the bathroom in the center like a galley alley on a sailboat, and with the loft on 2x4's eye level at the kitchen (to give myself some head room without pushing the 13' 6" height restrictions). I've debated the split of the kitchen layout, myself, but, we'll see--right now, it's still really, really just some various ideas running around the old noggin.
Anyway, it occurs to me to give you a picture of the whole frame, to see what you think. This is it as I brought it home:
