Well James,
Color me with the same brush....
You sold me on an 8X10 wood shed build .
I like the way you made benches on wheels and can roll them outside. That will be perfect for my current situation in the backyard this spring.
I looked at several of those wheels just recently on amazon, but ohh so many the choose from. Reviews on some say the wheels get flat spotted so I will stay away from them. I also read, some do not hold the weight they say are suppose to.
Mind if I ask what kind you are using and what diameter wheels those are if you happen to remember?
My plan is to just use some 3/4 plywood on top of 4X4 frame for the floor, but I see myself working outdoors often on the nice days.
Works OK in a temperate climate. But if you can afford it, have a concrete base poured that's double the length so you can have a nice surface to roll your tools out onto. Later, you can add a roof over the "patio" and work in the shade, and out of the rain. You can get decent 4 inch casters from Harbor Freight. An alternative to consider is to use two swivels in front, and two same size fixed casters on the back. This is much more stable and about as easy to move about than four swivels. My router table is intentionally NOT on casters. I wan that thing to be solid. Make sure the swivel casters lock both rolling and the swivel, or your tools will be unstable and harder to use.
My neighbor started with an 8x10 wooden shed on concrete base, and gradually expanded it by pouring slabs, then building extensions. He enclosed them with fencing so he doesn't need a permit. Our maximum size shed here without a permiit is 10x12. I have a 12 x 24 shed for my shop, built before the limit. It's the size half of a two car garage. Wish I'd had it set on a concrete slab instead of crushed rock. It rides on three long 2 x 6 beams and let the cold in through the one inch ply floor. I finally installed a "skirt" around it to keep the wind out, and it is much more comfortable now.
Both my shop and small office sheds are fully insulated and wired. My wife surprised me by hiring an electrician who ran a 60 amp sub panel out to the shop. Much easier than dragging a heavy extension cord out there. And no permit required. There are two breakers, for each circuit. In the box on the house, and one for each 20 amp circuit in the sub panel. I used flexible conduit with 10 gauge cables strung through them, to go from the box to the shed. Later, it was simple to connect it all up to the little office shed. Whatever my wife paid the electrician, it was worth it. Probably took him 4 hours to dig the trench and install the thing.
.I have my wood prep tools (Jointer, planer, 14 inch Laguna band saw and dust collector in my insulated garage. Ran out of space in the shop. I keep the track saw there too, along with a 4x8 foam slab for breaking down sheet goods.
Works for me. I did all this during my highest earning years, so it's all paid for.