I bought tier cake pans at a yard sale. DD 20 & I want to try & make a tier cake for DD 11. She wanted a Castle Cake she saw at the Acme but it was to much money. She wants Vanilla cake & chocolate icing. 1) Should I use a pound cake recipe? 2) I only have 3 pans can I do it without supports? 3) What about Icing. I have a chocolate butter cream I like. We are not trying to make a wedding cake just have some fun but not be embarrassed.