I'm planning to order some silkies (first time) for spring hatch. MPC offers sexing, but I know they come from Myer hatchery--which states they only offer them straight run. I've heard that sexing them is next to impossible--but I REALLY only want pullets. Should I just chance it and order straight run? And also--can I mix the banties with full size breeds if they are raised together from day one?