How many secondaries should I submit?

Hi everyone, I'm having some trouble deciding how many secondaries I should submit. So far I've planned to submit 20 secondaries, out of the 31 I've received. LM ~71, WARS 79, 3.92 cGPA, 3.92 sGPA, and 512 MCAT (129/129/127/127). Trad student attending a top 10 public school, and the basis of my application is cultural competency (this is the focus of almost all of my activities). I'm from SoCal, and these are the schools I already have/am in the process of submitting secondaries to: USC... How many secondaries should I submit?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: What Are My Chances? WAMC Medical Source Type: forums