This might be slightly irrelevant but I find leghorn roosters to be extremely human aggressive, out of around 15 leghorn roosters I can only recall 2 or 3 of them being nice to me. I have a leghorn rooster right now who tried to attack me but I kicked him and sent him flying, he avoids me now but will go after my little brothers and strangers.
I have had lots of roosters over the years and the only aggressive ones that I can remember besides leghorns are Cornish Cross and a Golden Campine, One year 2 Cornish X roosters somehow snuck past my dad on butcher date and 1 of them became human aggressive, the other stayed friendly, in the end both became coyote food. The Campine would attack very small kids, which is bad, but I would not let my dad cull him because he was my favorite. In the end the Campine also became coyote food.
So pretty much my point is you might not think he is a decent rooster in a few more weeks or months, be careful and be ready for if/when he decided to attack.

I have had lots of roosters over the years and the only aggressive ones that I can remember besides leghorns are Cornish Cross and a Golden Campine, One year 2 Cornish X roosters somehow snuck past my dad on butcher date and 1 of them became human aggressive, the other stayed friendly, in the end both became coyote food. The Campine would attack very small kids, which is bad, but I would not let my dad cull him because he was my favorite. In the end the Campine also became coyote food.
So pretty much my point is you might not think he is a decent rooster in a few more weeks or months, be careful and be ready for if/when he decided to attack.