I will seriously suggest against going after random cables ! :|
pay a premium for tried and tested cables. after all you are getting this to improve the SQ , what if your random cable degrades it .
cable is a very delicate matter , that's why people prefer ALO/Moon/etc for cables cause their cables are alredy proven.
I have read about cases ( in the Head-fi DIY cable gallary ) in which the USED made a top class silver cable only o ind the sound quality got degraded. !!
and about that connector, why not order a jeweler to make one , using silver or copper , wont cost you much , ( around 200 max )
so people save a little more and get the null audio Lune or the UE rainbow , they have a some good people backing them up