I've had some Cornish Crosses going since August 6th. I've never done meat chickens like this before... some of them are staring to to look pretty large. They have very well developed combs and they seem quite large to me. I figure they are probably males. I had planned to do them all on the second weekend in October when they would be nine weeks old, but now I'm thinking maybe I should spread the work out over a couple sessions and do the bigger ones now..... Are they ready to go? Is the comb any indicator? Thoughts? Thanks!