I am planning the build of our coop and am nervous about 2 things: First, Ventilation: I'm putting windows in all 4 walls which should work great for summer. But Old Man winter blows around at a chilly 15 degrees for a big chunk of the winter months, so I need to have other year-round ventilation options for when those windows are closed. What have you all tried and found to work well? One thing I read about: vent slots on the tops of all 4 walls. Has anyone tried this? And do you have pictures? Second: the Floor. What have you all done that works well? I want to do dirt or sand, but do I still need chicken wire, and if I do that, is it difficult to clean the floor? And if you've done sand, how do you clean the floor? And do you put straw over the sand? Do you sense my crazy, nervous predicament? I swear, I'm gonna so over-think this thing, and then one day wake up to find out it really didn't need to be that difficult after all! Thanks much, oh wiser chicken lovers!