I visit regionals besides the ones my team attends, and I've thought about attending a californian regional.
This is more a personal thing, but I don't know that many people from that area, I don't hear as much about the regional as I do about regionals like BAE or Midwest. The more publicity you have, the more people will make it out to your event. I heard a lot of good stuff about it from a member of an Indiana team, so I was interested.
Good luck
- Genia