Which would you do? For a party next Saturday night, I could bake the layers this Sunday and freeze until I frost the cake on Fri morning. Or, I could bake the layers on Thursday and ?leave out?frige?. I'm assuming the icing (buttercream) should be plenty fresh on Sat night given frosting it on fri a.m.? Would you refrigerate until 6 hours before serving, or just leave it out?