Do you prefer to go ahead and put 14 week old pullets in with their breed of rooster and grown hens and put the hens on grower pellets or chick food with them, with calcium optional, until they start laying? Or do you prefer to wait until the pullets are old enough to start laying? We have 3 different breeds separated into 3 different pens. All of the "Tweens" are in a 4th pen together. Have done it but ways, but can't decide which we prefer. Thank you!