@one piece crank man that is one piece of garbage study, no offense to you and I agree with
@Mahnken assessment
If you have long run from your panel to charging spot (through walls etc) then maybe cost could be up to $1k for electrician. I paid $300 bucks to have two outlets installed in and outside house, near panel in garage.
-You almost never need to charge to 100% that will degrade you battery. Or don’t let it sit at 100%. When I do a long trip I make sure its 95% and still charging to get max miles. I plan my departure. I even do this daily and set departure on car to 7am and start with a nice cozy warm battery.
-To answer your last question, you can drive it few days. Just don’t let it sit at low state of charge like 20% or less for overnight or at least make it a habit.
-you get home for the day and plug in you car it’s really that simple. Wake up 70% to 90% or whatever floats your boat in that range