Also, ALL combo chargers are pretty much scarce everywhere in CA outside of dense urban centers (SF Bay Area, L.A./San Diego). There are very, very few sites that have 4 or more units co-located (most of those are EA sites), and not that many sites that have 2 or more, really. The newer sites (installed in the past year) have generally been multi-unit installs, but sometimes only 2 units.
At least the new CEC-funded ChargePoint sites on I-5 south of Sacramento are multi-unit installs, generally three 50kW units. I-5 is drivable between L.A. and the SF Bay Area now. L.A. basin over the grapevine to Coalinga, (you may want to take a short detour to Bakersfield if you didn't leave with a full battery) then to Gustine or to Salinas for the South Bay (the 6-unit Recargo site) OR up I-5 to Gustine OR Patterson, then up to I-580 to head W thru Livermore/Pleasanton and the plethora of DCFCs in that area to head to the East Bay.
It will be even easier when the CP site at Lebec opens up, on the central valley side of the grapevine.