I just ordered the 5/8" CDX Fir/Spruce Plywood @$25.40/ea and they are ripping it into 2' x 4' pieces (quarters) and delivering it at no charge tomorrow. If anyone wants pictures when it's finished let me know via IM.Thanks to everyone for the help. That concludes my involvement in this thread.
PS: Feel free to discuss this more as it might pertain to someone else searching Google about this same thing. I'm all set on tips, advice, etc. on my project though.--
IF YOU FIND ANY MISTAKES IN MY WORK...Please consider that they are there for a purpose. I try to please everyone and there is always someone looking for mistakes!