Hello! I have six 15 week old speckled sussex pullets and we just recently set up a new coop. Since we have more space, I'd like to add a few more to the flock. I know that SS tend to be low on the pecking order. Are there any breeds that do really well with them? I am regretting not starting out with a mixed flock to begin with. I was just looking for kid friendly hens. I've seen local ads for wyandottes, marans, cochins, and orphingtons. Also, would it be best to get older pullets and quarantine them before introducing them, or young chicks in the brooder for a few weeks? Thanks!