Like I said though. If I tune to CNN and find the goddamn CHinese are invading, I'm gonna put that SOB together pretty ******* quick.
I'm with ya. Like my father says, "They'll find my body on top of a mountain of casings."

As for the rifle, being as you're in Cali, you can't get many of the better ones. I'd keep an eye out for yard sales out in the sticks around there (not sure where you're at in Cali, so that might be kind of hard), and see if you can pick up an AR-15, or more realistically, a Mini-14, Mini-30, SKS, AK-47, M-1 Garand or M-1 Carbine. They're all banned in Cali as far as I know, but they're all super dependable rifles, and with the exception of the M-1 Carbine, they all use easy to come by ammo. Plus the Chinese use SKS's, so you can use their ammo against them.

As for legally owned rifles in Cali, if you can't get anything semi-auto, your next option is a nice bolt action. Once you get used to them, they can be almost as fast as semi-autos (while making accurate shots that is), and are inherently more accurate than a semi-auto. Remingtons are probably the top of the heap as far as reasonable, reliable rifles. Old Winchesters are also fantastic, although the new ones have a less than stellar reputation.
The main thing is to practice like the Chinese will be knocking on your door the next day.