UCI is a decent program. One of the best locations all over US. The program is good, but overrated. You may find a good fellowship in one of the big California programs from here, though generally fellowships are not difficult and you may find it no matter where you go.
Unless you are very miserable to stay in California I would avoid Harbor-UCLA. Also forget about Cedar.
If you can match at one of the community programs in California, probably your scores are good enough to find a good spot at a University program somewhere else. Now it may be just me. But I choose a well organized university program somewhere else over a mid or low tier program in California or Boston or NY. It is only me. I know that people tell you that rank Cedar over Hopkins if you want to stay in California.
In general, community programs in good locations are overrated and difficult to match compared to many other excellent university programs but in less desirable locations. A good training and experience of a good department is something that will stay with you and can not be taken away, even if you can not f ind a job in your desirable location for a year or two. This is my opinion.