I would expect this rooster to get aggressive towards you. He is not respecting your space. This is the darling stage with roosters. Their approach to you looks like friendliness to inexperienced people, but it is a lack of fear and respect. It can rapidly turn into human aggression.
Be very careful and completely aware around this rooster, it would not be uncommon for him to sneak around behind you and attack. Inexperienced people often vastly underestimate the violence of a rooster attack.
11 roosters and 6 hens is going to cause a lot of problems too. Do watch your pullets carefully, that many roosters will begin to abuse that few of pullets in the near future. They could even kill some of the pullets.
Mrs K