Once hormones hit he's either going to be nice and respectful of you, or he is not. How you handle him has nothing to do with how he will turn out.
We had 2 cockerels raised exactly the same way. One is the perfect gentleman, the other was abusive towards the hens and started to challenge our 10 year old son. We kept the gentleman.
At 5 months your cockerel is still a baby. Over the next few months he will start to mature and establish his place in the flock, if he has some manners. Hens and laying pullets won't give him the time of day, and will in fact run him off if he misbehaves or thinks to challenge them, until he has matured.