Maybe I'm too late, but still...
As far as I understand, you have a lot of sunshine, and the EV will mostly be parked at home during the day, which means it can be charged for 6-7 hours a day. This means that 2-3 kW of charging power is more than enough. If you can charge from the grid during very cloudy days (or every couple days in low sun season, if you have such season), in that case I would definitely go with additional off-line solution. Depending on the number of sunny hours, 3-4 kW of solar panels, an MPPT charge controller, a true 3kW power inverter and a small battery would be enough, since the batteries would only be as an energy buffer when the clouds move. If solar electricity is your hobby and if you can afford a Victron charger, inverter, EVSE - then I would definitely go that route. It is a reliable manufacturer, with very active support, a lot of information if you want DIY. I would probably choose other brands of batteries and solar panels, though. I had exactly the same wishes as you, only in my case the EV is parked at work during the day. Because of this I had to buy larger batteries. So my system: 3kWp solar panels, Epever SCC(but now I would buy something from Victron SCC), Victron Multiplus II 5k, Raspbery Pi as controller (GX device in Victron terms), EVSE, DIY 48V 10 kWh battery. This system gives me more than enough power in the summer, but not enough in the winter, because during the winter we have almost no sunny hours at all. So only charging from the grid is practical in winter.