Priorities. I would pay the lowest possible amount I can legally pay in taxes and give to things that I prioritize. For example, the ACLU, the EFF, and the NRA. You sound like someone who already gives but for everyone else's benefit, here is a link [1]. Contributions to the ACLU Foundation are tax deductible for charitable purposes. (This means talk to your accountant if you make a lot of money.) Give, won't you?
But I don't want you to give money to the NRA (I assume that's the gun club), I would much rather you paid taxes.
I see the danger in the system you mention that lots of money will go to niche organisations out of proportion with societies requirements. Better to pay taxes in the hope that they are distributed where they are most needed.
I just saw [this](https://www.youtube.com/watch?v=SZb8EXUrQTo) video and I hereby withdraw any and all association I had or I implied I had with the deranged senile people. I hope everyone who still is a part of the NRA dies a slow and painful death (without the use of guns).
I could set up my salary through some finance companies in europe that help you keep up to 85% of your salary, but I don't.