Don't know how much space you have outside the walls, but it might be worthwhile to run screw anchors (such as used for guy wires on utility poles) into the ground a foot (two if possible) out from the base of each post then run guy wires with turnbuckles from the anchors to the tops of the posts.
Maybe not exactly the answer you want, but here is an article about equipping the unit to drain some water from the tank each time the compressor cycles.
http://www.paragoncode.com/shop/compressor/
I agree that too much space and circuits quickly become not enough. Half width breakers are a plus on circuits but a minus on wire space.
Plan enough circuits to allow several 220s. Welder, HVAC, large compressor... Don't have all lights on the same circuit. You will still want lights when...
Tall bookcases can tip over as well, especially in a carpeted room. The tack strip is next to the wall, where the back of the bookcase rests. Carpet plus padding, which gives more than tack strip, is under the front.
I use bunches of the slim wedges sold by Lowes and others to raise the front...
Received one of these "lunch pail drill kits" for Christmas and/or birthday in the early 1950s. Finally put it aside when I could no longer order brushes for it. I did go through the brushes!
Don't count on caulking doing much good with any wood which is decay resistant because of internal oils. Western cedar, probably red cedar, red wood, cypress, etc. Paint doesn't stick well either in my experience.
Wads of steel wool are useful to discourage mice and other vermin from entering...