First timer here (with all things chickens). My chicks are about 2 1/2 weeks old. Planning out the coop/yard and need some help! We have an old dog house that we will use in making a hen house- only it's just big enough for about 4 hens. We have 9. So we will need to build another house. Is it ok to have two houses in one run/yard? We will have (HOPEFULLY) one rooster. Thanks in advance for your help!