NEW YORK MEN and women who covet Blaine Trump's level of name-recognition tend to start their campaigns as soon as they marry a rich spouse or earn their first $10 million. Should they have affluent parents, their onslaught on the social Everest may begin even earlier. For innovative youngsters with family money, there are do-it-yourself jump starts. Jennifer Bawden, the daughter of a Canadian energy entrepreneur, co-founded an informal discussion group for what she describes as "sweet, nice" society girls. They convened at Mortimer's. "It was called the 'It's In to be Nice' club," says Bawden, a fashion designer who has piled up 14 junior charity committee credits.