If funds were available, I’d build an island somewhere in the Pacific–there’s lots of open ocean there that isn’t too close to other countries.
My system of government would be a monarchy in which everyone is considered aristocracy, so anyone and everyone would have access to government. Family clans would make their own localized decisions for their own family groups, but anyone would be able to marry into any other clan.
A monarchy would keep peace between family clans and see to the general welfare and defense of everyone, and therefore head of armed forces and all would learn, according to his ability to use weapons for defense.
All would work with their own hands at doing whatever is needed for the survival and well-being of the whole, but no one would be able to demand that another give up any personal property.
Guilds would teach the young various trades and vocations to religious life would be encouraged for those whom God calls. We’d have our own bishop and priests.
There would be the basic freedoms, but no one would be allowed to upset the civil order. Such infractions would be handled within family clans unless they are capital offenses such as murder or treason, which the monarch would preside over.
The island would grow with the population and anyone who wished to leave could with no shaming or shunning. New people would have to conform to the general order of the society.
A thousand couples/families would be needed to sustain and grow the population and all would be invested in its building, according to his means, and maintenance according to where he lived on the island. Anyone could build dwellings of any size to accommodate his family/farm/business.