For USC I would say a high match.
You have what they want with some minor weaknesses that can be justified by other aspects of your application.
6 APs might be a bit low, but that is just because its USC. Your test scores mildly justify the lack of course rigor but that lack bolsters the weakness of your low GPA freshman year. Your low GPA is then justified by improvement in the following years.
Its very difficult to say. There are also other aspects of your application that could shine. Do you have a hook? Are you particularly talented in a sport or instrument? Are you submitting any supplemental materials?
in totality, I wish you the best. I hope this coming spring you receive plenty of large packets in the mail.
-Lucas