Nice! But somehow I think this will be crowded. Need to have at least 20 V3 stalls here imo. Otherwise like others have said, it will be congested. Also I think it should be on the side going north of the 5. Most will need the juice going up that hill. But I guess we'll take what we can.
According to Supercharge.info/Mapbox there's little difference in distance or time heading north or south.
Southbound has a left turn at a light. Northbound just has rotaries.
It's under 50 miles from Tejon Ranch, CA and there aren't many significant places in between. Maybe a location at a gas station in Gorman,
Otherwise they could potentially try to add another Castaic, CA location at exit 176B.
Santa Clarita, CA is less convenient, but that would act as relief when Castaic, CA is busy.
Castaic, CA
Along Primary Interstates: I-5
Along US Numbered Highways (<=5mi): None
Along Auxiliary Interstates: None
I-5
From: Santa Clarita, CA - 5 miles
To: Tejon Ranch, CA - Outlets at Tejon Pkwy, CA - 46.9 miles
Diversion: 0.8 miles
From: San Fernando - Celis St, CA - 17.7 miles
To: Tejon Ranch, CA - 47.1 miles