I want to build a tractor that looks kind of like the the little red chicken hut(A frame) from i think page 40. I am not sure what size wood the use for the frame and the side/roof. Do you think the frame is a 2x4, 2x3 or 1x2 ? I want to use it of for a quad of banty girls. What do you think i should use for the wire screen? the 1/2in or the 1/2in one? I will make the whole thing 4ft wide and 6ft long every angle at 60 degree.