Speaker and IC Cable recommendations for Simaudio Moon 600i - Focal Sopra 3

I would love to hear any recommendations and why.  
My music room is has full carpet and what I would call level 1 sound treatment (first reflection and bass traps).  So a bit on the damped side, but I don't feel overly so.  
I'm pretty certain I want copper cables (I pretty much only have experience with Transparent w/ Wilson+ARC which I liked), but I'm saying that because I believe the Focals may be a bit much with silver. 
I've been considering:
-Kubala Sosna
-Shunyata
-Going back to Transparent
-Cardas
????
Anybody have any experience with Simaudio-Moon and Focal? 
I need 8' speaker cables and 1.5m XLR ICs.  
Budget is about 3k.  I'm open to used cables for the value. 
Thanks!