I am doing Karate and Tai-chi for one year..twice a week..how many normal chves can i beat up?

Because my area is covered with chaves and they comes to me to fight for no reason...i just signed a contract to study Karate and Tai - chi for one year? How much advantages do u think I can get out of it? How mny normal (normal means someon who starts a fight everyday..so he got the experience of street fighting) chavy person can i beat up?