I think this is a good idea but I don’t think it’ll be workable for my space unless the entire structure comes down.

How do you mean, raise the floor? I believe the concrete patio floor was poured as part of the foundation of the house.

Most of the circuits were wired with 12/3 already but with the ground wire not hooked up to anything. The electrician replaced the service panel, hooked up the grounds and installed new three-prong outlets. The circuits that were wired with 12/2 got GFCI outlets.

Had an electrician go through the entire place when we first bought the house so we could get safe three-prong outlets in place of the two-prong ungrounded outlets that were originally there. Didn’t do a full rewire because there’s no ceiling access - originally, the only heatsource for the house was electric radiant ceilings, though a couple baseboards were installed at some point after initial construction. The wiring for the sunroom’s A/C is run through a conduit on the outside of the house. I replaced the original through-wall unit shortly after we moved in, and I’ve seen that whole circuit.

What about the interior wall, against what used to be the exterior of the house?

Yeah, when we first moved in the plan was to put in an alternative heat source so we could use it as combination exercise / office space. I’d really like to be able to set it up that way - I like the view the sunroom gives but I really need more year-round floor space so I’d be willing to lose the sunroom functionality completely if I had to

I’ll recommend some modern keyboards that are suitable for your retrokit - I’m a big fan of Unicomp keyboards myself, though they do not do N-key rollover, if that is something important to you. Their lighter shade (they call it ‘white’) is more of a grey than a beige.

You may also consider USB keyboards that can handle P/S2 protocol with use of an adapter (not all of them can do this very well). I have a WASD keyboard for my modern PC that I sometimes also use with my older machines. I would recommend them, but they appear to be out of business.

This is an old article. I believe the original seller already depleted their stock. There’s a lot of good components in them for tinkerers and some folks still have interest in recreating the original services. I bought one while they were still being sold cheap, the things really were just like brand new