i would do a 30'x38' shop with two side lofts at the ends then a forge in the back center and a harden clay roof concrete floor with a under left loft for blacksmithing tools storage then on left loft i would do wood working tools and work space then on the right loft i would have a cot then under the right side loft i would have a solar shower with a drain under it that directs the water outside!