Club racing shouldn't matter too much. You can charge the night before. But its best to repeak just before your qualifier. Sometimes I'm on a busy schedule and do this for club racing (I'm the one every body knows as the one who gets to the track just before the 1st qualifier starts
). I've even had a pack charged for a week and just repeaked at the track and set TQ or fastest lap. However, I will say there's nothing like a freshly charged pack that peaks just when your qualifier is getting ready to start!