I'm planning on building a Lean To on the back side of my 2- car garage to shelter my firewood. I figure I'll use the 114" corrugated sheets of metal roofing from L0wes and build from there. Just wondering what kind of overhang I should plan on. I will install a gutter along the long end, but was wodering what kind of overhang you guys generally look for if all three sieds will be oen.