Help I am going to be using Henry and Henry Strawberry filling for a Wedding cake I am doing in a few weeks. I am trying to calculate how much filling I am going to need for placing my order. I have not used H&H before but based on he threads I have read I am giving it a try. I need to figure out how much filling I will need for afour tier square cake, 12x12,10x10,8x8,6x6. Any suggestions would be great!!!