<p>I am confused about what you mean about applying twice to SLO. Maybe this is something I don’t understand because we don’t live in California, and I know the system is “unusual” there. 
But generally you either apply ED or RD to a school. If you are rejected ED, you don’t get to apply again. At some schools you might be deferred to the RD pool rather that rejected, but you don’t apply twice.</p>