First this is easy. I've done six so far. But questions to ck off.
Where is breaker box? Pray nearby, no matter. Run wire
Have empty double blank to install new CB? Put 50 amp there. Buy at HD
U need 14.50 receptical box from HD.
Rolloff 3, 6 copper wire.
Watch YouTube videos. Total cost between 110 to 200
Don't need to waste money on Tesla charger.
This is not rocket science. But pain in the butt. My electrician buddy does two a day.
Honestly, very easy. Pulling cable can be real pain.
Good luck