I'm going to build a halfpipe in my backyard. I'm not a contractor but i built 8 of these when I was in high school (I'm 33 now). My main question is where I should get the would. It's a fairly large ammount (list below) and I assume there are ways to get it cheaper than from the Home depot. Priced out at home depot, the total is $1803.76 Any suggestions appreciated.