As mentioned above I managed to assemble one 5-panel side and the 2-panel front and back.
There are mold pin indents on the back of the peaked and flat tops that will show after the roof is installed. I filled these in with putty and will sand them later on. The seam where each wall meets will be covered by an H-column. I plan on laminating concrete sheets to styrene to cover the area at the bottom of each panel where the mold pins are.