Recommendations? 2-Channel Audio System Speaker Cables and RCA Connects and Amp Power Cord

My System:
Audio Research VSi60 (Integrated strong-~50watt tube amp)
Lumin T1 (using its DAC, too)
Focal 1028BE (II) 

Room:
14x20x9

Preferences in order of my desires:
-Imaging and Soundstage 
-Natural/Realism
-Less fatigue (I know that's frequently a trade-off with resolution and the above preferences)
-Dynamics
-Tone/timbre

What I listen to:
-I like folk & americana (from Cat Stevens, Jakob Dylan)
-Blues (Eva Cassidy, John Hammond)
-Guitar (both acoustic and electric: Leo Kottke, Mark Knopfler/Dire Straits)
-AOR Rock/Classic Rock

Budget is around 2K for all.  Used is fine, too. 

Thanks for your inputs!