I have purchased a childs playhouse to convert to a coop. It is 5 ft by 6 ft and I plan to raise it up and put a run underneath. it does not have a floor but I plan to put a slide out tray design. I thought about using vertical boxes instead of horizontal to make use of the side door instead of having to retrofit it with horizontal boxes. Do you think that would work? Also any other suggestions on the conversion would be greatly appreciated as we are new to this. Thanks!