I have 8 months til my wedding and all I have left to do is my cake and flowers. I've been going back and forth between a square cake and a round cake. We're expecting to have 150+ people at our wedding. My fiance' is having 6 different cheese cakes as his grooms cake. Do you think that getting 3 tiers will be enough or should I go ahead and get 4 tiers? I really need the help. Thanks