I did the race in my Catalina 25 double handed. PHRF 228. Short Course. We finished at about 1 AM. Then we turned around and sailed home to Mission Bay, getting in around 4 AM. Slept and went to the party.
This is a good, low key, way to start ocean racing. You can certainly race the double handed class single if you want to. The organizers will let just about anything go.
The short course is about 65 miles. You should plan on finishing the next morning. It is usually a downwind run. Spinnaker or Asym is a good bet.
As I recall, there was a cruising class. You can't motor, like in Newport - Ensenada or San Diego - Ensenada, but this is for less competitive boats, maybe those with dacron sails and not all the race equipment.
By all means, enter. You have to learn sometime. This is a good one to start with.