Re: wires. Important, your equipment is suberb. It seems you'll have to fall back on friendly dealers. I suggest you audition specific cables & keep notes on how they perform in your system -- and post them. Then other posters may be able to narrow down the choices based on your findings, i.e. how you listen and how "it" sounds to you in yr system.
Recommended cables for trial (from a practical point of view, i.e., many here have compared & contrasted these with other cables):
*Nordost Valhalla or SPM (I would leave out the quattrofil), and/or
*Purist Dominus I/C + Purist speaker OR Valhalla OR SPM speaker and/or
*Siltech SILVER (whatever it's called) I/C + speaker OR Valhalla OR SPM speaker...
...whatever is available. Having heard your equipment (but NOT in your configuration!) I could have a few ideas based on your findings. I'm sure other will have many ideas. Cheers!