Update - bought the wood for the remaining part of the back wall. By next week I will have 6 feet, 10 inches of wall that consists of 4 pieces.

Section 1 - 8 inches tall, 4.25 inches wide, 24 inches long, and has 6 sides (top, bottom, front side, back side, left side, right side)

Section 2 - 8 inches tall, 4.25 inches wide, 22 inches long, and has 6 sides (top, bottom, front side, back side, left side, right side)

Section 3 - 8 inches tall, 4.25 inches wide, 18 inches long, and has 6 sides (top, bottom, front side, back side, left side, right side)

Section 4 - 8 inches tall, 4.25 inches wide, 18 inches long, and has 6 sides (top, bottom, front side, back side, left side, right side)

Each one after assembled will be sanded down by me, caulked to fill any gaps, and then sanded down again. I will then pack them up and send to Phruby and it looks like these will be painted/detailed by him or on site if needed.