My SF is a very sweet girl, she's noisy though! They talk a LOT haha, not super loud unless laying, but chatty! Will spill all the tea on the flock with you while you visit. She is definitely low in the pecking order, even below my white "street" silkie Betty White, but gets along with everyone. I think they would end up doing fine with your flock! Lower than the cochins and sassier d'Uccles but higher in the order than most of your silkies. I have no experience with the roosters but have heard they are really great in general as far as personalities go. If the breeder is a good one, they should have great personalities and be sweet and gentle. I think you would like them! That is a pretty good price for 5 show quality birds! I've paid almost that much for 3 bobtail cochin roosters