I just found out about the NCR-80= keyboard kit
Wish I could help you more on the ALPS aspect, but I don't know how/if they interface with the NCR-80.
But I have an NCR-80. It's a great vintage retro-styled case at the entry-level budget.
Yes, it uses cheap plastic for the case. It's very much an OG Cherry board in terms of build quality. I have a plateless NCR-80 WKL with Ergo Clears. It feels and sounds like typing on wet cardboard, or especially egg cartons.
It is a very roomy, mostly-empty case.
The thing is - they are great for clicky builds. There are videos of NCR-80 with Zeal Clickiez, which is the most ALPS-like clicky available to MX. Apparently, NCR-80 is one of the best boards for these. You can make it really resonant and thocky.
I would recommend NCR-80 if it can handle ALPS. Sure, it's not the best board if you run it over with your office chair. But if you don't actively damage it, it will be fine. Mine is standing strong after a year or so, and I move it all over the place. They are more mobile than most boards.
If you are worried about the 'wet cardboard' typing, it may not be an issue with clickies. But also, you can purchase NCR-80 with dampening foam + CF plate. The CF plate is actually pretty good. With foam and plate and silent switches, you can make a relatively quiet NCR-80. Here's one I organized for a relative:
https://www.keebtalk.com/t/ncr-80-plastic-kit/15024/118?u=hungermechanicR3 is now available, it comes as TKL instead of WKL. Beige-only, maybe? Anyway, NCR-80 is pretty good at replicating the vintage aesthetic and feel, but yeah, it's not a Filco Majestouch so don't use it as a baseball bat.