I have straight Delawares - 5 hens and 1 rooster. I am not happy with the amount of meat on the roosters when I butcher them at 20-22 weeks and was thinking of replacing my Delaware Rooster with a Dark Cornish Rooster. I am new to this. Is this a standard cross? Will the chicks be a lot meatier? Do you think the egg production will suffer very much on the hen crosses if I hold some back for egg production?