It typically takes a good 2 weeks for them all to settle down after adding a new bird. Taking one bird out for a week then adding it back will make that bird a new bird.
Looks like you're spot on! You'll need to get rid of at least one of the cockerels. They are also old enough that they need 100x more room and to be outside.
You're not breaking any rules. It's just that the more knowledgeable identification peeps here won't typically click on old threads.
We will need to see pics of your birds. You were wanting to know breed?