How much do you think I could weigh by the first week of September if I stick to Jenny Craig?

I am on Jenny Craig to try and lose weight and so far I have been on for about 3 - 3.5 weeks and started out at 173 and am now 163 - 163.5. Also I am a 5.4 or 5'4.5 male and I am 14. I will be trying to exercise a lot and am playing in a basketball league that has 2 games a week and also a basketball camp or 2 that lasts a week. What do you think my goal should be by then? I am going to High School next year so I really want to be a lot thinner than I am now. THANKS!