I clamped the top to the side of the base, as I had done before, so that the edge with the knot would be easy to work with. I mixed up some ordinary five-minute epoxy and added just a touch of black epoxy pigment. I applied this freely. After about twenty minutes I checked on it and found that in the deepest spot the void wasn't entirely filled, so I mixed up another batch and added more. After that had cured for a bit I eased the top to the floor and applied a coat of oil to the bottom side. I planned on attaching the base to the top the next day, and I wanted the bottom side oiled to keep it from absorbing moisture.

You're not the first person to say this! I'm half inclined to use the Lowes shed as a starting point for my own design. But I do think I'd feel better if I could work as an "aprentice" next to an "old master". Someone at work is going to put me in touch with a guy who builds sheds for a living, and apparently he's competitive with the prices @ Lowes and HD. The Lowes shed comes with a "Handman Package" that I don't want but would end up paying for, anyway. The "workbenches" were laughably flimsy.

The source above is not exactly a tutorial, but it gives you a basic idea of how the author built a Quirky Pallet Art to enhance the look of their old house. You can also find another tutorial at the link below. It shares a step by step procedure for making a wooden pallet sign. The final product is not exactly the same as the one above, but the basic idea is the same.
I mocked up the two scenarios, and determined that with the plate inside the stretcher the vise would have a reach of 8 inches, and with it outside the stretcher it would have a reach of 9 inches. I decided that 8 inches was enough, and that the extra inch wasn't worth the extra effort. With the end vise mounted like this, the right edge of the top would have no overhang.
I made a low table out of a couple of step-stools, my hollow-core door, and one of the MDF panels that would eventually form part of my top. I was concerned that any oil that dripped on the door might interfere with its glue adhesion, when I finally get around to the project for which I'd purchased it. The top side of the top sheet of MDF, though, I planned to oil, anyway. (Ditto for the bottom side of the bottom sheet.
Of course, I, on the other hand, with my Ikea oak countertop, probable went overboard in the other direction. Since I needed to trim the countertop to width,I figured I'd take off a couple of 1/2" strips to use for edging the MDF. I clamped the countertop to my bench base, and used the long cutting guide. I'd asked around for advice on cutting this large a piece of oak, and was told to try a Freud Diablo 40-tooth blade in my circular saw. I found one at my local home center, at a reasonable price, and it worked very well.
Though the preschool had been using the woodworking shop for storage, not realizing its historic value, it’s still in remarkably good shape. The woodworking benches and tables are still in excellent condition. According to Garrison, the shop is filled with clues as to how it was used. Some benches were covered in paint while others bear saw marks, testifying to the variety of tasks that were performed there.
I don't see anywhere you mentioned the over all length of the bench top. A piece of 1 1/2" x 25" x 8' glued edge oak at Lumber Liquidators costs $192 including tax. Two piece is almost $400! Would that be better if I use two IKEA 1 1/4" x 25" x 74" solid Beech ($99 each plus tax) on top of a layer of 3/4" Birch plywood. That would be 3 1/4" over all.

Working with reclaimed wood is a savvy use of resources, and the material's country appeal is undeniable. With just a saw and a small drill, you can reuse old fencing to make these simple woodworking projects: picket-inspired picture frames. Finish them off by hot-gluing clothespins or bulldog clips to hang your prints. Here’s a step-by-step guide.

The bench would end up being about 5 feet long. I thought about cutting 5 feet out of my 8 feet long countertop and use the rest for a small support table. However, after a consideration, I decided to bypass the front vise altogether together with the overhang so my bench will be 4 feet long. This allows me to skip the MDF and just glue the two halves of the 8 feet board together.

Anyway, I'd like to know if I'll be able to keep (EDIT: and use) all my tools out there (current and planned) without having the shed become a rust-bucket for the tools and machinery inside. I'll have a 10" contractor's saw out there along with a drill press, a sanding belt, a router & router table, and lots and lots of old tools that I inherited from my Granddad years ago. I live in the Seattle area, so it rains A LOT. But I'm hoping that with the proper ventilation I can keep the tools in the shed dry.