That's exactly what I do, the kicking is an immediate gut reaction, otherwise I wouldn't kick him. I would go on the offense now, making sure he keeps his distance and back to you. Another tool I use is my plastic coffee can feed scoop which will get tossed at any rooster doing things I don't like. It's a way to reach out and touch him from afar and will give you extra power just by carrying it.
I am not out daily dominating roosters, mine all behave themselves. Some young ones need reminding in spring. I personally don't let them mate in front of me or when I'm in the shed, because the dominant rooster doesn't allow it either. I take my cues from the chickens.
After he understands you are top rooster he should stop his trying to dominate and accept he's below you. A sure way to check a roosters acceptance of you being dominant is to pick up a hen who squawk to see if he runs over. He shouldn't, or if he does he should stop when he sees you. He's young and just needs teaching, and time for his raging hormones to calm down and for him to make better decisions.