I need to start baking cakes for a bridal shower party this morning. The lady sent me a picture of a four tier cake and wants it cut down to two tiers to feed 22 people. She also told me that she doesn't mind extra servings to pick the sizes that look best. First I was planning on making a 10 and 6 inch cake but now I am considering a 10 and 7 inch cake. What sizes do you think would look better together? TIA