I am relatively new to the sport and I want to purchase my own ball and have it custom drilled. I have only used house balls between 10-12 lbs. Avg speed is around 16 mph and avg around 140 a game. This is all done with straight shots. I want to learn how to hook the ball, and have learned plastic coverstocks are really only for spares. I would appreciate recomendations for an entry level ball to learn to hook without being, too,expensive. Also, is it recommended that I go for a heavier ball if it's being custom drilled?