Kettleman is a little out of the way. Usually if taking I-5, you would veer off on 46 toward Paso Robles-then US 101 to Salinas and over to Monterey. Plenty of Superchargers now to support you.
Thanks all for the suggestions!
Planning I5 up and 101 back down, stopping in Paso Robles. Been to the original Kettleman location and have no problem using it again, just like that the new one is all V3/250kwh.
Leaving from Sant Clarita, so I5 is quickest. Will be picking up family at the Monterey Airport, so time is a factor on the way up.
Pushing to Kettleman gets me to Monterey with enough SOC to pick up at the airport and get to Carmel with just the one stop.
Crossing over further south through Paso means 2 stops as home to the Paso supercharger is 177 miles. Car is 2018 Model 3 Performance with real world range of about 180 miles (60k miles +/-8% battery degradation, 20" wheels, I don't drive 55, we don't pack light, etc).
My experience is fewer stops result in shorter overall travel time as each stop inevitably includes drinks, snacks and restrooms, which stretch a quick 10 minute stop to 20+ minutes.
Thanks again for the suggestions.