Esoteric CD / Conrad Johnson Amps: Interconnects?

I am a bit of a newbie at this stuff, but did want some forum thoughts on what interconnects would work well with the following setup:

Esoteric X1-D2 CD/SACD player
Conrad Johnson Act 2 Series 2 Preamp
Conrad Johnson LP140M's amps

I have little experience on interconnects, but have been told I should go with a pure silver interconnect from the CD player to the preamp and then a silver/copper mix cable from the preamp to the amps.

Additionally, what would be a good interconnect choice for running the 5 channel analog out of the Esoteric to my prepro to take advantage of listening to SACD?

I would appreciate thoughts on the above and specific manufacturer recommendations.

Thank you.

Bryan