I see a lot of plans for the chicken coops that have panels/flaps that lift up for easy egg collecting. Is this necessary? I'm building a fairly large coop and didn't plan such an opening and would like to just have 12 nests line a 12-foot long wall. I plan on just entering the coop and reaching into the nests to collect the eggs. 1. Will I cause any problems by walking into the coop to take the eggs? Do people only do the flaps for convenience? This convenience is not something I really care about. 2. Is there anything wrong with having so many nests (12) all next to each other on one wall? It's just easier to build that way. Thanks!