Another question for you more experienced wedding cake makers. I will be making a four tiered wedding cake for my SIL’s wedding cake in June, the reception is a fairly light lunch with the cake as the only sweet. I was thinking that 15, 12, 9, 6" rounds would be plenty for the 135 guests that she has invited. Any one think that this is not enough or that a cake this big would look awkward? I generally have only done 12" cakes on bottom with 3 tiers so I just want to make sure that this won’t look odd once I get it all together.