Join Date: Dec 2015
Location: The Very Tip of Lake Michigan
You are on the right track with conduit and overhead dust collection. I have set up two medium size shops. My current shop is 32' x 75'. Every single circuit is surface run in thinwall conduit. This can come in handy at times, especially when you figure out that that machine should have been over there... but it's a 240 volt machine, not 120 volt! With conduit, ain't no stress! Simply pull in a new pair of blacks, change the receptacle, plug in and move on.
I also run my dust collection overhead and make drops where needed. And I never glue up the PVC. A couple of short screws and a wrap of duct tape on each joint make for an easily modified piping system. Machine in wrong place? Simply relocate it and modify the collector pipe to match. The screws also give a great place to anchor your static grounding wire. Got a plug up? Take it apart wherever, clear the plug and done (though this rarely happens).
All of my walls are painted A/C ply. 1/2" is plenty. Go 5/8" if you're planning on hanging a lawn tractor. 1/2" is plenty for anything else. Plywood is so much easier and more versatile than pegboard. No need to buy special fittings or hangers to hang that odd thing. Just crank out a custom hanger out of either scrap wood or steel and screw it to the wall! I also use a lot of trim screws. They have a tiny head and work well with hanging normal stuff. They also remove easily.
Now this last one might or might not work for you, but I had it for over twenty years in my former building. I didn't insulate the ceiling per se. I screwed 4' x 8' sheets of 1" styrofoam to the trusses. It was light and easy to install by myself, it insulates well enough to easily heat (I do not air condition), it's white and bright, and it looks pretty decent. I don't recall having ever damaged it.
Setting up a new shop can be stressful; you want it to be perfectly laid out and built. The reality is that it's a rare occurrence to get it "right" the first time. Shops are often a work in progress forever. I'll bet I have thirty drawings laying here and there from sketching various machine scenarios. I haven't got it quite right yet! The main thing is to have fun with it, think outside the box on occasion, and make the building easily able to morph into your next vision.
Another $000,000,000.02 worth of advice,