This is so confusing to me. I am doing a 5 tiered stacked wedding cake, 6", 8", 10", 12" & 16", each layer 4" high and transporting it about 50 miles. I can't figure out what I need for support, and I have emailed three of the cake supply companies, even calling one. It's been over a week now and haven't had any replies, & I do want to order a set, but can't figure what I need. Can anyone help me? Thanks!