As you know, it's a bit of a chore getting our cars up n down the state. The Costco charge in Goleta was in a big shopping center so that wasn't bad. Santa Barbara might've been even nicer, though a more expensive place to shop/sightsee
Charged up again in SLO. Plenty of options there and food/shopping/sights.
King City is a little blip in the road. Passed through without stopping a gazillion times. But during my 3 hour charge there I wandered through town and found it quite charming. It's a migrant agriculture town with delightful Mexican bakeries and authentic little taquerias. Being from LA this might not sound appealling to you. For me it was a trip through little Mexico.
Next stop Salinas or Gilroy. Both are small towns, both have DC Fast options if you were so inclined.