There is an Amish shed structure place near me. My question is I am trying to keep cost as low as possible. I have been looking at a 14x20 built shed and wanted to no what is recommended for floor structure. I believe they lay down 4x4s placed every 4' with 2x4s overtop every 16", with 3/4" plywood on top. Is this adequate for a 2018 3025E w/ loader and a 3PT 64' Frontier snow blower. I am guessing its close to 3200lbs ? Would a 2nd layer of 3/4 plywood be required? It would have a 7' garage door for entry, I will have to lower roll bar.