Is there space it mount the spare under the bed kind of factory style to save space? or carry a second spare? What about putting it flat in the bed and building a cover for the bed thats even with the fenders. I just think the lower center of gravity the better also the wind won't blow you around as much. That looks like a lot of space under the bed that doesn't apear too useable. but I may not be sharing you vision. If you are keeping it that tall, I agree that continueing the "platform" over the bed. It would give you somewhere to stand when you mess with the tent. The LC we rented in AU was dented all over the roof just behind the windshield from people standing on it. Things like getting the cover tucked in properly and messing with the fly. Shoot why not exo the winshield.