Havasu park looks pretty epic, haven't been though.
http://northwestskater.com/lkhavasu.html
Nor have I been to SLO, Los Osos, and Ojai, but if you decide to go the CA route they look cool.
https://www.concretedisciples.com/skateparks/174-usa-skateparks/southern-california/20675-santa-rosa-skatepark-san-luis-obispo
https://www.concretedisciples.com/component/content/article/58-usa-skateparks/20421-skate-park-los-osos-california-usa.html
https://www.concretedisciples.com/skateparks/174-usa-skateparks/southern-california/20042-ojai-skatepark-ojai-california-usa
I have skated the Solvang park. It's fun with a weird two tiered bowl area. Not too much for street skating (not sure what you and the kids are into). I hear it gets crowded on the weekends, but during the middle of the week I was the only one there. Lots of good food/beer/wine in the area if you're bringing anyone who doesn't wanna skate.
https://www.concretedisciples.com/skateparks/174-usa-skateparks/southern-california/20248-hans-christian-anderson-skatepark-solvang
The Bay has tons of parks. Berkeley is big with a nice mix of stuff. Emeryville is fun, funky. And there's a bunch more in Oakland and the City.
Hope that helps, have fun!