Sorry like ace550 said it’s PSY-P 101.
I don’t know the exact credit splits for earlier registration but u should know your time to register will be a specific time as well as day. When classes are filling up every minute counts. OTOH, my waitlists usually workout as many people register for too many classes on purpose to hedge bets and then drop before classes start. I recently was 15th or so in line and the waitlist cleared in a few days much to my surprise.