Purist or Kubala-which to buy for entire system

I am finally pretty darn happy with my system. It consists of Epiphany 12/12 speakers, modded Dodd 120's, and APL 3910, with latest Sound Applications Linestage. I have lots more eq, but, I am trying to simplify. I may end up using a Pre-amp, but I am not sure yet. I do have Dodd Reference Modded, and Modwright modded. Now, my quandry lays here. I am presently using Xindak gold 3 meter interconnects(1 amp on each stand, 8 feet apart). Speaker cable I am using bested Virtual Dynamic Revelation in my system, it is no name, as of yet, but the wire is used to seal Nuclear waste, and sounds amazing. My power cords are Purist Dominus on Sound Applications, Electragide Ultra Khan RR on APL, and stock on my amps.

I have an opportunity to get "a deal" on the latest Kubala Sosna Emotion, and/or Purist line of cables. For the price I can get it for, I cannot audition.

I would also appreciate opinions on whether I should put my amps together, and get longer speaker wire, or longer interconnects.

I have been told by Rick Schultz(VD)and others that the only real way to get the BEST synergy is using same brand cable thu-out system. I just dunno, and in commiting well over 5K to cables alone....I would like some assistance.

Thanks in advance, and best of luck in your journey

Steve