No, it isn't a 100% free market if the rich can pay politicians to enact laws in their favor.

There should only be "just" laws, not unjust laws. A just law in this context would simply be any law that protects people from a violation of their will within a logical order of operations across time. So murder, rape, theft, fraud, etc., would all be illegal.

What wouldn't be illegal? Drug use, prostitution, etc.

Would speeding be illegal? It depends. Who owns the road you're speeding on and what did they tell you the speed limit was?

I would still own my home so if you came in it would be illegal for you to smoke crack in my bedroom because I say I don't want you to do that, and it's my home, so it's my rules. If you choose not to obey I have every right to ask you to leave, and if you refuse, I have every right to use violence upon you to make you leave.

Unjust laws are just those laws that step from victimless crimes, such as say, smoking weed.