You could get good side (whole body) profile pics of each one, and start a thread in the breeding sub-forum here. Ask the people which one they think best fits the breed SOP. Or, you could keep your favorite. I would just treat him as livestock. No petting or coddling. Sort of he's there, but...
Indeed they are boys. Their temperament now is not always indicative of their temperament once they sexually mature. A lot of sweet cockerels male mean roosters. I personally would just keep the nicest looking one and then do not treat it like a pet.