This is my first year raising chickens and I have a flock of RIR hens. Next year I want to add some more birds to my flock. I want to add some EE and BR. Are they ok to all have together? I will start the EE and BR from chicks then introduce them in. If that will work to have those three breeds, I also want to add a rooster. What would be the right kind of rooster to add? If possible.