Your bed looks really solid. The only thing I'd have to do differently is suspend the free side, instead of putting it on legs. Because it will be hanging above the queen-sized bed. The thing is, I've seen pics of a couple of different beds where the free side is suspended from cables connected to either the ceiling or the wall above the bed, but I don't know what kind of reinforcement might be needed to keep the roof or walls from buckling under that load. Just to be clear...there's no weight on the floor-no legs. The whole bunk has to hang off the sides and roof of the van. Just trying to figure out if they're not sold any more because they damaged the vans....