Hi all...working on finishing up the coop. Probably going to tyvek it this winter to keep out the drafts between the sheeting and deal with some pine siding in the spring. Got good ventilation. I've got a long vent along the front north wall and under the angled roof on the east/west wall. We have about 1/2 the south wall vented at the top (similar to north wall). All the vent openings will be covered with 1/4" hardware cloth and screen. We're in northern MI...get a ton of snow and wind. What are the ups/downs to having vent covers inside vs. outside? Are there any or is it personal preference? Thanks!