Update: A year and a half later I'm finally working on this project. :confused2:
It turns out the building is only going to be 40'x48', I originally miscalculated how many trusses, etc there were. That said, the shop and equipment storage area are both only going to be 24x40, which is kind of small. As my needs for a larger shop develop, I might just pour the other half with concrete, have the full building be the shop, and build another shed for equipment. Honestly, a 60' long building would have been pushing it size wise for the site anyways.
First order of business was tearing down the old shed. I salvaged all the tin and most of the wood and plan to use the materials to build a little three sided shed at another farm. It took a while since I was salvaging all the materials, but after a couple days I got it down.