Keep doing well, and keep rocking your ECs too. Take advantages of all the opportunities at USC to further strengthen your application. I was a transfer from a California CC to a 4-year in NY, and I chose to take a gap year so adcoms will see two full years of my grades at my 4-year, plus all the long-term activities I did there. I took all the pre-reqs except for physics at my CC, and I think I'm doing pretty well this cycle. PM me if you have more questions - I'd be happy to help and give advice.