It depends on how much you drive, and the car’s efficiency. I only have access to 120v for my car. I can charge 29 kWh per day if plugged in for the full 24 hours. Which on my Lightning is about 58 miles/day.
I work from home, and so my avg daily mileage is pretty low. There is also a public L2 charger about 4 blocks from my house that I can use if I’m low from a trip.
It’s workable in my situation, but wouldn’t be ideal or even feasible for a lot of people.
You will need a charge cord (EVSE). Most car will come with a portable one, that usually supports 120/240. If you don’t get one with the car, they can be found for under $200 new.
As long as password auth is disabled you’re fine. No one is cracking your RSA key. You can add Fail2Ban to reduce the log noise, but security wise it’s fine.