Geoff,
Here are a couple thoughts after building this set-up...
Dimensions:
39" deep
39" tall
98" wide
My bench is too deep (for me and I'm tall), needs to be 32-33" deep.
I have mine screwed into the wall studs.
I added the center support "leg" to cut vibration.
I keep the middle shelf full of heavy things...bullets etc...again to cut vibration.
You need LOTS of electrical outlets. Recently added several ceiling & wall outlets...wish I had a power strip along the front...oh well.
Keep a fire extinguisher handy.
White (light reflecting) Pegboard...the KEY to life!!!
Shelves on the pegboard are good.
You can NOT have too much light!
Made of 2/4s and plywood.
Good luck!!!!
Bob