So, me and my friends are making a 16' long box, 12" wide. We've, made one box already but it was much smaller. We used lexan on the previous box, but we're finding it's going to cost a lot more for all the plastic we need for this one. I've found the right amount of lexan for about $110, I found HDPE for about $70, and UHMW for about $150. Will I really notice a difference if I go with HDPE over either of the more expensive plastics, or should I opt for the more expensive stuff?