I am almost finished with my coop and I have a few questions. I based it on the USDA plans for an 8x8 poultry house but I didn't put up the cupola. I did use 2x6 rafters and will be covering the soffit area with hardware cloth, will that coupled with the windows(still have to cover them as well) provide enough ventilation? Also, I was planning on using some 1/2" thick plastic(pvc I think, it was used for house trim) for a guillotine type pop door. Would that be secure or should I cover the outside of it with aluminum flashing? Thanks for any input.