I am looking to get a 2016-2017 Model S. I am wondering what the best home charging option is. I already have a 220v outlet in the garage and would still like to be able to use the outlet for my generator if needed. It is also my understanding that the Nema 14-50 chargers have to be the older version. I drive 160 miles round trip daily for work also and will be only charging at home. Any advice is appreciated. Thanks