Rich Floridians expect to pick up a bigger part of the tab for their children’s college education than the wealthy in other parts of the United States. A survey by BMO Private Bank found that affluent parents in Florida — those with at least $1 million in investible assets — expect the parents’ personal savings would cover 67 percent of their children’s college costs, including tuition, books, supplies and living expenses. The average published charge for tuition, fees, room and board…