Ain't you lucky there's other accordion nutters on this forum.
Yes, it's doable, but might not be worth for you, as it involves almost all of the steps to manufacture a hand-made reed. You're saving time on not having to cut & profile the tongues yourself, but you're complicating things by having the tongue's rivet hole pre-stamped.
You can make the shoes either by hand (a real pain in the arse) by chain-drilling out a piece of aluminium, then filing. Or get them cut on a laser. Cheap & cheerful, but your new shoes won't have any relief on them (reed slots need to open up towards the back of the plate to prevent the tightly-fitted tongue from clipping the walls).
It's OK, afaik, even Italians are still filing the relief by hand on a-mano reeds, and it's not a difficult job, you just need a set of safety files that can't be bought commercially, so you need to make your own on a bench grinder.
The problem for you is then to place the rivet hole in the plate in such a way that the tongue will be closely aligned with the slot.
It's a lot easier to take a reed blank, hold it in the slot and punch the rivet hole in it on a special jig, but you don't really have such luxury.
As an option, you can design the new slots slightly smaller than your reeds and then file the reeds to fit the smaller slots. After a couple attempts you should be matching TAM quality in terms of fitting gaps.
You then need to rivet the tongue onto the plate, which takes a bit of skill, but if your hands are growing out of the right place, you'll be a skilled riveter after about 4-6 hours of practice. It's not hard and you don't need a 4-year degree in it. But it really helps if you have a reedmaker who can show you the process!
If I were you I'd sell these reeds to a diatonic fettler. Should be very nice reeds.
