Good job! Hope the modded keyboard feels great, I plan to mod my FILCO TKL to clears. Hope It'll be worth it 
I just modded my PLU TKL to clears and will post about it once the acrylic coating dries on my casing. (ie I am now using a PLU without casing)
Clears are always worth the work.
My PLU was a real pain, but hopefully your Filco is easier to take apart and to desolder.
Actually im sending it to margo, im too afraid to do it alone. I dont want to ruin anything.
Though the filco is double PCB mounted i believe, so i think it wont be easy

But i have faith he will do a very good job with it
