Sinlge stage or 2 stage paint

I have sprayed single stage urethane paint enough to no that I can paint my car with some confidence. I know base coat clear coat is the way to go but that's double the chances for mistakes. My car isn`t going to set out side it will be in my garage when I`m not driving it. what do you guys think should I go with what I know or do what I know is the best way