In my opinion, for some of the West Coast's best, make a road trip....
From LA head over to Lake Casitas in Ojai and play Coyote Point. This is a great woodsy elevation course wrapping around beatiful lake Casitas with 18 permanent holes. Next, make your way along the coast until you get to Santa Maria, where you'll be looking for Waller Pines. Another great course, very well layed out, some woodsy holes, but not a ton of elevation. There are 27 permanent holes there. Now, if you happen to head inland from there, in Visalia, CA there is a great course at Mooney Gove Park called Perry Outback. This is a fairly flat course, but beautiful oaks are scattered everywhere. The course has 18 permanent holes, and offers lot's of opportunity to practice different technique. The course, in the longs, is about 8000 feet long with a technical 735' hole being the longest. From Visalia you'd probably want to head North, maybe even stop by Fresno and play Woodward Legacy Disc Gof course. Another rolling hills course with 18 permanent holes, and about 200 newly planted trees which will wreak havok on our drives in a few years. From Fresno you'll be making your way back to the coast, and you may want to stop in Monterey to find the CSUMB (Monterey State University) course. Their northern course is tough. Lot's of trees, mandos, distance, and wind. This course is located ON the campus of CSUMB. I don't remember this course name but it's NOT the Cypress course, which is about 1/4 mile down the street from it. From Monterey it's obvious where your next stop should be....DeLaveaga Disc Golf course in Santa Cruz! This is arguably California's best disc golf course. Plenty of elevation, woods, distance, TIGHT fairways, the infamous I-5 and Top of the World holes, and the opportunity to compare your skills with the world's best (It's a NT stop). There are 27 permanent holes and plenty of locals to show you around. From there you'd probably want to check out the course in Orangevale, CA, another great course which hosts two A Tiers every year. Very technical and tough course. That's about as far as I can get you North, someone else chime in for other great courses on the journey to the north....
P.S. Have you found Emerals Isle or La Mirada's courses down there yet?