Thanks, Mark, Just wanted to show it's possible to cover most of the layout with just 2 sizes of modules and 4 custom modules. Here's a little better rendition of where I'd put decking no matter that kind of benchwork is used. I should also mention that I believe HD and Lowe's will make up to 2 cuts per sheet of plywood for free. That means the sheets could be cut in half lengthwise to make handling easier for ripping. If they offset the cut a bit, each 4x8 sheet should yield 15 strips 3" wide or 11 strips 4" wide. If there are going to be legs every 48", I think 3" is probably wide enough. For $1/cut, I think they'll do all the cuts, though it doesn't take much to run a half sheet of ply through the table saw. 
