@Gumbymom I think they posted UW GPA at the top, although I think their grading system is out of 5.0 or 6.0? Out of your two scores for the SAT and ACT, I think I would post the ACT but I would like to see what @Gumbymom @ucbalumnus @Lindagaf and @Hamurtle have to say. As for your ECs, there are a couple that will be quite strong such as interning at the Stanford Lab and hosting the Bio club.
I would say you definitely have a shot at USC but it has become increasingly competitive over the years, so anything can happen.
On another, you mentioned that the bio club was just padding. I strongly advise you to never say that to anyone. First off, it will come off as not a genuine interest of yours but rather something you were forced to do. In addition, you should really be focusing on things that you want to do. For example, I do the CS club and TEDx because I genuinely like to see people learn something new and enjoy creating inclusive communities in both of the clubs while acting as a mentor figure to underclassmen. In the future when you go off to college, engage in activities that you want to do that are not solely on your resume for “showing off”.