Am designing a 4'x8' coop, dual walled insulated, windowed & doored, 16" coded walls & floors. & Will need help on how much lumber I'll be needing. Likewise, should I go with Particle board, rather than plywood? So far, my list includes: Face: 2 4'x8'x1/2" Plywood/partboard 8 2"x4"x8' stud Sides: 12 studs 8 Plywood/partboard Rear: 2 Ply or partboard 8 studs Roof Slanted: 3 2"x6"x8" stud 2 Ply or partwood Floor: 2 3/4"ply/part 3 2x4x8' studs 2 2"x12"x16' Planks On 3 4x4x4' treated lumber base The framing for the door & the window will be minimal, & any cut outs for the door & window will be used towards that. I want to know, is will this be enouhg, & should I got T-111 on the exterior, & minus the plywood/partboard? (or cover the ply/part with T-111?). Thanks, any help & addition or subtraction would be greatly appreciated. Thanks!