Get a city map of Santa Cruz, CA and a phone book with yellow pages for same. Then you're halfway there. (Visiting there once and checking out the boardwalk would be good research, as well. You'll quickly find SC is a city designed by people on drugs for people on drugs.)
Then pick a system. Buffy and WoD would probably work (although WoD is probably a little too "serious" in tone), and Savage Worlds would probably do nicely - get the Rippers campaign setting and set it in 80's SC instead of 1800's London.