Thanks all for your suggestions. I've been looking into the epoxy option and I also called my local steel surplus shop to get a quote for a 3'x4' 5/8" surface plate to have it Blanchard ground down to 1/2". Can't imagine it'll be too much for the plate, and then I can build a stand for it.
I've also been looking at these:
https://weldtables.com/collections/p...ab-slot-u-weld, and grab the leg kit as well. Seems pretty good, but I'm not an expert either.
I've got a nice collection of files so far and am accumulating a fair amount of consumables as well. A surface plate and/or frame jig will be the biggest expense for me. At least for now, since I'm not going to get a mill or lathe anytime soon.