It is your money so you decide to pay or not. One thing I could tell you is that student at S could make some significant $$ working on campus. They pay something like $15 ~ 17/hour. At one time, my DD has 4 jobs and she could still carry a full load.
You might already know this- S must have 40% of the student body from California. So the AR for CA student is much higher than the overall 7%.
Lastly, if you don't apply, you will never get in. What not apply first, you could always choose not attend after admission.