I have only been baking cakes professionally for a short time. I have my first wedding cake order to serve 200. I am a little confused about tiers. I was going to do 3 tiers, but it looks like I would need to make the largest tier 18". I am scared (lol) of a cake/pan that size. Can someone please suggest how I can avoid this large cake pan. What other combinations would work. I wanted to do a 3-tier, but I can surely make a 4-tier instead. Please advise sizes for both a 3-tier and 4-tier round. TIA

This might be helpful:
http://www.wilton.com/cakes/making-cakes/baking-wedding-cake-2-inch-pans.cfm

Go with the 4 tier. Also ask the bride if she wants "slightly more or slightly less" than 200 servings". Rarely do servings come out on the money to what they are wanting. Be sure to charge for what you provide, not for what they want. (i.e. they want 200 .... the pan combo works out to 224 ... you charge for 224)