So I've found bits for a V-Brake to Caliper conversion for my elcheapo 2nd hand MTB and I need some advice.

The bits I'm missing are:

1. Spokes
2. Brake Cable

My question for the forum is does the quality of the spokes really make any difference? (I bought a hub that has a disc mount and intend to lace it to my existing rims. The hub PCD is different to what I have and I will need to buy spokes.)