The freshly hatched farm boy Richie Migliore was working his way down the Hudson River Valley late Thursday morning, heading for work at Belmont Park. Earlier in the week, he was rabbit hutch shopping at the local Agway. In the coming weeks, he needs to deal with some serious equipment purchases. Then there's the winter ahead, which always hits sooner than anyone expects, but he's already got a guy who will plow his long driveway for $150 a pop.