I can definitely emphasize- you need hours to get a job but you need a job to get the hours. Definitely get your CFII. With the fall/winter season coming more people will be inclined to get their instrument ratings and having a CFII will give you an advantage.
I don't know the scene at SNA, but at LGB it's basically ATP (which you know about), Long Beach Flying Club, Aces High, California Flight Center, and Angel City Flyers. You might need to widen your search to Fullerton, Torrance, Chino, and Corona airports.