The idea of do-it-yourself libertarianism is a good one but it shouldn't be a total strategy, more like one tactic involving several others incorporating a total strategy to reach a more libertarian world. You don't believe people should break the law? There's no way that DIYL will succeed if people aren't willing to break the law. The government will try to stop anything that gets too successful if they don't control it.
Are you familiar with Konkin's idea of counter-economics? Basically he claims that a free society will evolve out of the black market. I don't agree that this is the solution either because black marketeers profit off of their good/service being scarce. Nothing against agorists, voluntarist or anarchists. I just think every strategy needs to work with one another.