What better way to start the weekend than to consider what horrifying hedgie-of-the-moment, Fifteen Central Park West duplex owner Barry Rosenstein, could have bought with the $147 million he’s spending for his ostentatious new East Hampton estate–if he didn’t feel the need to live in a quiet, low-profile location like Further Lane in East Hampton. The latest Unreal Estate column in Avenue magazine, “Isn’t it Rich? thinks it would be rich–and smart–to look elsewhere, and get a castle or an island or a ranch, and a Gulfstream VI with the change.