@holmz a Pure Copper Zavfino DIN Plug and the Chassis Mount Pure Copper WBT reduced eddy RCA's will be a good start for the connections.
There are already links to Zavfino in other posts.
The Jury is out on Copper vs Silver, I have used OFC Copper Cables in the early 00's and exchanged all Cables to OCC Copper and Silver over the course of New Millennium.
In the past few years I have been exchanging to CCC Copper and D.U.C.C Copper Cables from Power Cable through to Speaker.
After the impression made during a recent Tonearm demonstration, I will soon have a Tonearm Internal Wiring in CCC as well.
SAEC are unique in using the same wire type in a commercial product, and it can be found used in their $13000 Tonearm Model.
Both myself and a friend now know why SAEC chose this wire, out of the numerous other choices for them to select.