I have the same size shed for my shop in Ruidoso, NM. I put benches on both long walls, one side has an 8 foot bench, the other a 6 foot bench, both 2 foot wide. On the 8 foot long end walls, on one end the top half pegboard and the other end I have 1x1 shelving on the top half. open OSB on the bottom half. Plenty of room even for the yard tools and Christmas decorations.