Please look at this image of something similar we want to build: http://www.screen-house.com/wooden_shed_quaile12.htm this shed is 12 x 20 but we want ours to be 14 x 31 similar style. also the outside will be finsihed in stone so sizing of shell needs to accomodate that… (Budget: $30-250, Jobs: AutoCAD, Home Design, Structural Engineering)