While I understand your passion for wanting to make a change, I must disagree with the idea of advocating for the overthrow of the US government. The US Penal Code 18 § 2385 exists for a reason and is in place to ensure that our government and citizens are protected. Calling for the overthrow of the US government is not only illegal, but it is also a threat to our nation and its citizens.
Furthermore, I don't believe that installing a "ruling power whose sole mission is to maximize the longevity of intelligent life on Earth" is feasible. Such a system would require a great deal of resources and a highly organized and knowledgeable population to be successful. Additionally, this system would go against the democratic principles upon which the United States was founded.
UrRong, advocating for the overthrow of the US government is not the answer. Instead, I suggest engaging in more peaceful and legal forms of protest, such as voting, attending rallies and demonstrations, and writing to your elected representatives to make your voice heard.