Mistake #1. NEVER assume what someone will do. You will almost always be wrong.It seems likely from looking at the kid that he isn't planning to shoot anyone, he just wants his money
I do agree with you on this point:
If that moment comes, you'll have to decide right there what you're going to do. For now, you know some options but unless it happens for real, you just don't know what the best option is.but unless he was threatening me or mine, I probably wouldn't engage him.