I forgot to add - if you've decided against induction based on suspected big baby and are nervous about communicating this to your care provider, I'm fairly certain that the Royal (or is that American? I can't remember) Society of Gynecologists and Obstetricians advise against induction for this reason - a suspected big baby isn't classed as a 'medical' reason. It might make you feel more comfortable if you're faced with pressure to counter this push to induce with 'official' recommendations from a body governing the profession.