Same. Mine usually do a few warning pecks when he tries to be too frisky too fast. Granted I have a pair of hens plucking tufts and feathered legs bald now, but they also were in a stressful house until recently, so I'm giving them some ease on that behavior for a few more days
Hit or miss. Mine do because I inevitably get breeds I can't sex until 5 months. I still hand feed occasionally, but offer it to him first so he can call the gals over. Once he's a He, he owns the flock when it comes to providing for them. I just provide enough for him to provide to them
They...
Raising him with older birds helps. Leave him alone, don't cuddle him.
Hit or miss. Raise both in the same space. They'll either get along or won't.
They'll be fine