Probably too late, but I am really pleased with Parker Electric. After installing the #6 cable to the Tesla wall connector, they installed a 60A breaker as the wires ran in open joists in unheated areas and partially in conduit, which technically is within code. I was willing to take care of the inspection.
BTW, they also installed a new main panel, all at half the next 2 bidders. I fear the others were charging a "Tesla tax", they were within $5 of each other.