I bought a house and am having solar installed, along with HPWC. Both 4.3kW (DC rating, 4 kW AC) solar and HPWC @ 50A breaker will be in a garage sub panel, fed by 3/4” conduit, which I believe can take max 60A breaker on main panel side. Does the garage sub panel need to be 100A to avoid overloading bus bar? Also getting main panel and service upgraded to 200A. In the future, I could add max 8-9 kW solar on the house roof feeding the main panel. Should I get a 200A main panel with higher rated bus bar or “solar-ready”? Finally, I may want to add Powerwall in the future. I would hope to add in the garage, but assume that would require digging up and increasing the conduit and wire size to the garage. Alternatively, could wire into the main panel. Would that also go against the main panel back-feed allowance, in addition to the solar? Thanks, trying to learn all of the potential intricacies. Maybe I shouldn’t worry too much about future proofing, but I’d rather get the right panels now to make it easier if/when I get more solar and Powerwall.