USC Chances Application DONE

Hi,

So I just applied to USC on Dec. 1 and I wanted to know what I could do to maybe further higher my chances (i.e. emailing admission officer). I wrote in the additional comments section that USC is my number one choice and if they gave me some kind of scholarship I would definitely attend. I am a legacy, however, my ACT/GPA score is lower than their 50% avg. But I have my own successful tennis coaching business, and an international award, and I come from a single parent household. So what do you guys think my chances are and what can I do to show the admissions officers that I really want to go to USC.