I used to shoot at OnTarget in Laguna Nigel quite a bit...atleast two time a week...they have weekend IDPA matches too....Once they get you know you and what not often times they will let you go in the unused bay and cut loose if you want. I think year memberships were like 125...well worth it if you shoot a lot. AR's with frangible are ok here btw.
Otherwise there is a very nice outside range at Prodo dam....look up Mike Rahagis (sp) and I beleive it is private but open for matches, they have like 10 pistol berms and run regular steel, IDPA, and IPSC matches....after the matches you can hand and put a few down range if you little heart desires.
I think, at least there used to be, lots of matches at the Prodo Olympic range too....Not sure how they are on shooting fast.
As for the CCW, it is a pain in PROC. I took a class from Bill Murphy, ex OC SWAT i beleive. very good class...pretty basic but good. Sheriff of OC, Mike Corona is pretty good about issuing CCW, but you have to show need. In otherwords, through a job or business where you carry lots of valuables or need to protect your merchandise. If your employer will vouch for you and say you need one for work, you are in good shape.
Other than this, you can prove that you need a CCW to protect your weapons. In order to do this you need to prove you shoot a lot!. This is where joining a local range comes in....Go in and document, have them write a letter that you shoot 2-3 times a week. Then for justification you say, "I need a CCW to protect my weapons and keep them out of the hands of criminals to and from the range." I think it is also good if you can include that you travel distances either through work, or to and from shoots.
Anyway, thats all I remember. Hope that helps.