Hi - I'm brand new to the sight and brand new to raising chickens. I will be purchasing about 5-6 5 month old laying hens from our local feed store. I have had two offers to donate a rooster to me. One is an unknown breed 9 mos. old rooster and the other is a 4 mos. old Americana rooster. Would it work OK for me to bring the rooster in at the same time as the hens? Also, I want to purchase several different breeds of hens - my priority is laying hens. Recommendations on laying hens? If the hens haven't been together already, can they just go in together at 5 mos. old? Thanks.