As for stabilizers, cherry plate mounted are available on mouser, part number is
0G990224. Costars are available on WASDkeyboard
HERE, bottom half.
I have enough cherry stabilizers for 20 sets that can shipped with the plates. If I run out, you can get your own from the links or from Profosist. If you're getting your own, a complete TKL needs 10 stabilizers, I think shipping from mouser is $7 and WASDkeyboard is $2.50. Currently you can't buy cherry 6.25x or 7x, and 7x costar wires anywhere so I'll make these when the time comes closer.