That certainly cannot be the best piece of legal advice a law professor ever gave you, I'd have trouble even believing that a "t.v. lawyer" would tell you that, let alone a professor. "Doing it big" is sure to draw a lot more attention and get you caught. Surely, having money for a defense and preparations for such circumstances doesn't hurt and should be a given before you decide to start an illegal operation; doing it big is not equivalent to doing it right. The idea is to never reach the point of being investigated or arrested, let alone going to court and paying for a defense team; in order to avoid that, you do it quiet and right, not "BIG" !!!