Not sure if anyone is still checking this thread, so I will add a comment. I don't have much experience with adult roosters, but am guessing that more handling would be good. You could also try PM'ing posters on the thread that had good experience with BA roosters if they don't see the thread...
This is nice report about your BA's. I enjoyed reading it. You might find that two roo's is a little hard on 6 hens. It seems I read somewhere that you need about 4 hens per roo. I claim no expertise on this so you might want to read up on and watch how the roos handle then hens. Good luck!