From a ROI point having multiple slower chargers is probably better. Within a city people hardly fast charge normally (or do they in the states? European here. Within cities it’s mostly L2 at 2x11kw , but many such Stations) Maybe 50-75kw ones at supermarkets but the proper DC chargers are mostly along highways. In your map there is a highway , but I guess it would only be interesting those passing there. Mostly people will rely on slow chargers and as others stated intial costs are very high compared to L2 while you cannot charge that much more compared to L2
In Austria it doesn’t work that well (mainly due to pricing probably) . Superchargers mainly hogged by old model S (which probably free charging ?)
Depends on location probably. Know of some here in Austria that are hardly visited despite open. But some others have customers. Location nevertheless is very important. My main point was - for the price of a 350kw charger you can probably build 50 L2 chargers spread across the town/city. So risky to build only very few chargers within a town. The highway there might help