The VTA ST-70, ST-120 and M-125 monoblocks are not particularly sensitive to capacitive loads. That said, I can't guarantee that any of the amps will drive "any" load.
If you want to make home made speaker cables, then I suggest using Canare 4S11 cable and then solder on your own spade lugs, banana jacks etc. Canare 4S11 is not that expensive either. (maybe about $1.20 to $1.40 or so per foot) It has four separate conductors inside that you can use separately to bi-wire OR you can combine the RED and PINK for your positive and your BLACK and WHITE wire for the negative. This cable is an 11 gauge wire with a "star quad" winding system that is designed to minimize interaction between the stands of the cable.
There are a number of places that sell the Canare 4S11 online ..