I am getting one black star, one plymouth rock, and one easter egger hen soon and I need to build a coop. I have no idea how big it needs to be or what it needs to have in it. I live in South Florida so it doesn't too cold but it gets really rainy and hot during the summer. Any suggestions? All help is greatly appreciated. How big should the coop be for three chickens. And I don't need extra space in case I get more because there is no way my dad will let me keep anymore. How much space will they each need to roost? How many nest boxes do i need?