Yup, I just made a 28XX stone (273%) from my 761 eth Balrog Armor. So your Dusk Shroud should yield about the same. Could easily go over 3K if you hit 290%.
Also, on the 4 sock Wire fleece, probably not worth a whole lot, hard to say exactly how much. The def is pretty low and you would be under 700 for chains. For 4 socket non-eth Wire/Dusk/Archon to be worth much it has to be close to or higher than 500. Othewise they are too common because you can make any white armor 4 socket. Just look out for those 3 socket ones.
Hope this helps and anyone please feel free to let me know if I am wrong. I have been selling all mine back to Lazurk for gold...