I would think that you would want low capacitance, and you could accept high inductance, since the sub is only interested in high frequencies. Resistance is not an issue as there's very little current.
In short I'd think that the REL supplied cable would be pretty good in this respect ... just cut to length as shorter is always better.
In short I'd think that the REL supplied cable would be pretty good in this respect ... just cut to length as shorter is always better.