First things first. I applaud (and share!) your hopeful enthusiasm for your student’s SCA acceptance, but given the university’s projected 10% acceptance rate (from @CADREAMIN‘s source) combined with SCA’s 3.5%, first make sure you temper expectations and setup have alternative plans.
Have your son spend time polishing his short answers for the SCA scholarship app, and relax 
We’re all in the same boat, so let’s enjoy the ride.