I just ordered 6 Barred Rock Pullets and 1 Dark Cornish roo. Has anyone had any experience with this breed/mix? Would they have a decent growth rate? Does anyone think that they might grow out in 8 to 12 weeks. I may also try the Dark Cornish roo on some Black Giants. Just wondering, Would like to become less dependent on hatchery hatched chickens and raise my own.