STOP.
BEFORE you spend one dime on this project, you should talk to the Smog Police to see what's legal and what isn't. I'm thinking these folks are called the CARB Referee, but whatever their title, you need to have the conversation.
First off, you cannot remove or defeat any of the existing pollution control devices, and the ones on the engine have to be functional. This includes a California-spec catalyst, EGR, PCV, AIR pump and plumbing (if equipped), the charcoal canister, and so forth.
Second, if you increase the displacement, you're almost certainly going to need to tune the computer to compensate. And far as I know, that's an automatic fail at the test station.
Third, all your aftermarket upgrades--which don't include "OEM replacement/equivalent" parts, but would include the aftermarket cylinder heads, camshaft, rocker arms, etc.--had better have a CARB Exemption sticker and paperwork, and you'd better be able to keep track of it so it doesn't get lost.
The .030 overbore is meaningless in this context, provided you use an OEM-style replacement piston that maintains approximately the stock compression ratio.