There is another Supercharger (only 72kW?) on Camino Del Sur which may or may not be better for you. It seems like it opened pretty recently. I have no idea. I have FUSC, but never go to Superchargers, so don't know the situation with this one.
EDIT: there is an entire thread about it of course.
Supercharger - San Diego, CA - Camino Del Sur (Black Mountain Ranch area, LIVE 11 Jan 2019)
It seems like calculating the cost of additional solar (increase density and area?) would be worth comparing vs. your electric bills at this point. Those AC bills are not coming down; the world is now starting to heat out of control (it really is hopeless!). Maybe even put them in your yard.
My main regret in getting solar is that I didn't go with an 8kW system and put it all over the house; I made it relatively unobtrusive instead for aesthetic reasons. Though prices have come down since then, so maybe it was best to wait. Maybe just rethink things when I redo my roof.