Hey there! My family & are have been building a decent sized movable coop, dimensions at widest being (H) 6' 4" X (L) 10' 9" X (W) 5' (though with the arc it cuts down on square feet) Anywho, I'd like to know if the four ventilation grates you see (the brown squares) will provide enough venteltation/too much/do we need a different placement/more of them/do we need windows/etc... We live in WI where the winters are cold & summers are humid if that helps at all. Thank you for input! *Coop is not finished yet, as you can see. We're going to shingle the roof with that white sheet stuff that's used for agricultural buildings, insulate the inside, & put nest boxes off the back (or maybe go the 5 gal bucket on a rack route).