Just use NACA5. Get your dealer to solder on the connections that you get with your power amp. It really is a no brainer in terms of VFM. Yes you can get "better" speaker cable, but the only one I have heard is Chord Signature at £stupid amounts per m. Even then going back to NACA5 was a pleasure (did not own the sig, just demo).
Ok its a bit difficult to manouvere, but the use of a hairdryer on low heat setting sorts that out.
Make sure you get 3.5m minimum either side.