It's called constructive criticism. It is meant to be helpful and not at all judgemental. You've asked for advice from those of us who have done chick to adult flock integration. We are letting you know that you are very, very likely to run into integration issues and are actually trying to help you. I'm sorry if you offended as no offense is intended.
If you take the advice to heart, you will find things will go much smoother.
