You do realize you will be $500k in debt when you graduate if you decide to go to USC, right?
Get yourself the ADEA Guide (green book the year I had it)......it has every stat you need from every dental school in order to make strategic decisions about your competitiveness.
IMO, 3.2 GPA is going to be a struggle not only at USC but the majority of schools, unless of course you nail the DAT (24AA) and have awesome EC's. Best of luck.