It seems to me that you are partly arguing for minarchy? On an intellectual level I am 100% anarcho capitalist, but in today's practicality it is impossible to live as anarcha capitalist, other then spreading the word and being into crypto currency. Every-time we do something in society today all over the flat earth, then it involves statism in my view.

You ask how we would stop agressors that violate self-ownership in an anarcho capitalistic society? Well its done with private courts, that can judge people and punish them if they violate the non aggression principal. There theory is in place for this to happen and I believe it will work.

Again today the majority of people are brainwashed into believing in statism and 7 years ago I was more positive about waking those people up, today I am not so positive and believe it will not happen in our lifetimes... we see advocates of anarcho capitalism being corrupt so it is discomforting in the pursuit of changing the world.