Can you get to Del Mar? 12 miles and it's downhill. There's some L2 halfway in Fairbanks Ranch in case you chicken out as well.
But yeah, Tesla definitely needs to spend a lot more effort maintaining existing infrastructure and building out more. In San Diego, the "Coming soon" Escondido and Vista Superchargers can't come soon enough. Another one off I5 in Oceanside and farther south along I15 would add a lot of flexibility, too.
Even if Tesla magically installed all the "Coming soon" Superchargers in California, I don't think it would be enough for demand here during busy travel times.