Subpanel for HPWC
If you have the space, installing a 100 to 120 amp subpanel near the HPWC is a practical approach. You gain an effective cutoff, and could add in a different future tech, or a 120 outlet etc.. I think one other advantage is asking an electrician to install a subpanel is what they do all day long, then it is a short hop to the HPWC. When you ask for the HPWC, if it is far from your main entrance/main panel, they may pad pricing heavily since they are in unfamiliar territory.
I differ from babyrocket... I would strongly suggest the dual chargers. You won't use them often, but when you need it, having 58mph charging at home can be very helpful, plus you may benefit from someone else's HPWC or other faster charging option while travelling.... such as at a Tesla service/sales center.