IMO - the roo needs to go. At his age, I believe you said a year and half, aggressive behavior toward other animals will not stop.
Our extra roos are pastured with our goats and horses. Always have been.
Our goats are kidding now. We have a LOT of new babies. A 1 yr old rooster that has never bothered any of our new kids or the adult goats suddenly started attacking a day old kid. We do not know why.
He did quite a bit of damage to the goat. Most of the damage was from his toes curled into claws and his beak. His spurs were still nubby and not long or sharp. We processed the roo after spending several hours out with him watching and trying to stop him. I am not willing to have a rooster attack other animals, so I made the decision that was best for us.
You may be able to find a sweet rooster for your girls. Our roo in with the girls (separate area of the pasture) is a big sweetie and does very well with his ladies.
I definately would NOT tolerate a rooster chasing or attempting to attack me.
There are methods that some use to try to calm an aggressive rooster (holding & carrying him around for one). This did not work with our attack rooster. But if you do not want to get rid of yours, that may be an option to try.
DD has an aggressive OEG roo - he flogged everyone and anyone. After him attacking my legs 3 times in less than an hour, and him following me around an acre of land the whole time trying to hit me more, I did a Tiger Woods swing on him with a broom stick. He is no longer aggressive and, yes, he is still alive.