I am in the process of building a coop for 8 chickens. I keep going back and forth as to whether I should be able to walk into it. What are the benefits of having a tall walk in coop? Better ventilation? We are planning on building it to be 12x12 with a small storage area on the side with of course the run that comes off of it. So I am thinking maybe to save money I should walk in to the storage area and then have the coop slope down from there so that I won't be able to really walk into it. Thoughts????