Oh yes... maybe somewhere roughly the size of Jersey, with Cornish weather. Might as well make myself Baron.
In which case, I would live in and rule from this mighty keep:
I would be smart about the infrastructure. Security, self-sufficiency, and survival are #1 concerns, which have to be balanced with the objective of keeping a reasonably small, stable population to ensure an island community.
Residence and access would first be allowed only to "friends", family, labourers, and business associates, but it would also be a haven for secretive high-tech industries. People would be closely vetted before being permitted to live on the island.
The laws for legal residents would be rather libertarian. I don't agree with petty legislation micromanaging peoples' lives. Drugs laws would be reasonably relaxed, with softer drugs legal. Gun laws would be relatively slack too, provided the existence of loyal, well-armed bodyguards. However, punishments for willful disobedience of the generous law would be most "cruel and unusual".
