Floggy juveniles make for bad roosters. Please do not let him draw blood. That is my red line for roosters. If you raise roosters around a mature flock of matrons it will all get easy. I have three cockerels in my latest batch but they have a long way to go to become the alpha's in the bunch...
If you throw all of the roosters into a bachelor pen for 1-2 months it can really change their attitudes. Just speaking from my past experience. Best wishes. Last year I put three adolescents in and got 2 good ones out. The alpha was still a flogging jerk but got souped.