It doesn’t take much, so you should absolutely just do it. However, you should also realize that most of the time you’re streaming, you’ll have an audience of 0. And when someone does join, they might not stick around.

As long as you don’t have unrealistic expectations, I think this could be a cool hobby!

It depends what you mean by ‘security’. Obviously, by introducing more layers, you have more places where exploits can life. However, the biggest threat by orders of magnitude is being tricked into giving stuff up, and that risk will remain constant.