I'm doing the fingerprint tree for my guest book, and I'm a little lost on what size to get. I've looked at several different sites, and they all suggest different sizes. I plan on having approx. 80 ppl. (including the wedding party) and have read that I should have anything from 10x12 to 16x24 for that amount of people. I feel the 10x12 is too small, but 16x24 is quite large. I was thinking maybe more like 14x18 or 16x20? Anyone have advice?