I think you're on to something as well cakebaker. I was thinking about making the bottom tier 4 layers total (8") and the middle tier 3 layers (6"), and then the top tier probably another 3 layers (6").
For the bottom layer, it will be easy to seperate each 2 layers with a cakeboard, but what do I do about the other 2 tiers with only 3 layers each? My inexperience is showing!!!!
I haven't seen indydeb's instructions. I'll have to look them up. Since it is for family and a bunch of kids, I'm sure the serving sizes will be bigger than usual though!