where should my cock live?

Hi,

We've decided to keep one of our cockerals, Beau, as he is sooo pretty. He's young and only just started to crow and try himself with the hens - he is a lot smaller, will that be a problem?

He has been living with all his brothers and sisters but in the next two weeks his less attractive brothers are going and I shall move the three sisters in with my other three older hens.  They have a smallish henhouse that they use for sleeping and full use of a large walled garden.

Do I put him in with the hens?  I've popped him in for the last two days and there doesn't seem to be a problem but i wasn't sure if that was the right thing.

Can you also tell me what problems i might encounter?
Many thanks

Michelle