Welcome from another transplanted Californian. Wasn't born here, but got here as fast as I could!
A few will disagree, but most will tell you that .380 is a minimum carry caliber. Most will also tell you that you .38 Special is their minimum carry caliber. Most will also tell you that, if you're still shopping, not to look at anything below 9mm. Us old 1911 dinosaurs will tell you not to consider any caliber not beginning with a "4". Those of us who carry .40 S&W will insist that they are members of that club, although the .45 guys will say "yeah, sure," and wink.
All of us are wrong.
The .32 Seacamp in your pocket beats the 5" 1911 you left at home. Dude, get what makes you comfortable and gives you confidence in your ability to shoot it reasonably well. Just remember that you're going to be carrying this thing around all day (+ reloads), so buy the pistol that best meets your lifestyle and mode of dress while still packing enough power to be effective. Even lightweight pistols weigh a lot by the end of the day. And remember that, even as you figure this out, you're probably going to have to make some concessions in your wardrobe to accommodate CCW - looser fitting pants and untucked shirts being examples of what I mean. Lastly, regardless of which gun you settle on, if you're going to carry on your hip, don't pick around when selecting a belt. Invest in a purpose made gun belt. Most are nice enough looking that it's not really a fashion burden to wear one (meaning nobody who sees it will know that it's a gun belt), and they can be had for reasonable prices.
Beyond that, get the pistol that makes you happy, and that you can afford to purchase, and afford to buy ammunition for. Then get good with it.