I second what Laura says here from hard experience. Enjoy this rooster as a solitary bird, else give him a minimum of 10 hens. No second rooster unless you have 20 hens or more. A great way to have rooster problems is to give him only a few hens. Oh...and be sure roosters are legal where you live. In rural areas it\'s no problem, but if you\'re in a suburb, development or urban area -- do check before you become too attached to this bird.
One of my roosters, which I unfortunately had to give up (because I didn\'t practice what I preached above) was very aggressive in the morning also. He\'d come barreling down the ramp of the coop often chasing a hen and the way he ran, he looked like he was on wheels rather than running. The hen woud hide behind a tree for an hour. You\'ll also find that different roosters have somewhat different personalities.
Of the pair that I had, one would not crow often, but was a highly successful mater; the other crowed all the time, but was a lousy mater. The quiet one was the one who\'d be barreling down the ramp like gangbusters. I miss them both, but anyway...
A certain amount of aggressiveness in roosters is normal -- it\'s part of their job description -- what you don\'t want is having it directed at humans or resulting in injured birds.
Keeping him solitary -- or providing 10 hens minimum should help keep things orderly.