IMO would suggest any wire set that will fit and is of good quality. quality is a vague term, but no cheap, use silicone large diameter, and resistance wire set. The wire sets of the you make them to fit is a good option.
The 8.1 wires are thru the roof expensive and for the main reason is because there are not very many of them. There is a guy on OSO (BUP) that sells sets for a better price, but how good don't know