Had mine done two years ago by Alfred at smetonearms.com using ceramic bearing and the Cardas Litz wiring. More than happy with results.
Thing about the bearings is, what may seem smooth enough to you - isn’t.
I replaced the steel BB at the bottom of my Thorens TD125 Mk2 with a ceramic bearing and Thorlon (Torlon?) plastic disc after reading about the bearings Alfred used. There’s all kinds of data online about wear and longevity but what got my attention as applied to this application is how smooth the bearing surfaces are as compared to steel. Smooth means less friction means more freedom of movement in the TA lessening forces on the cantilever/stylus. It seemed like a no brainer.
There was a slight rumble I was hearing in the Thorens TT which got better with the Torlon disc, and is inaudible once I replaced the bearing, then I bought a sapphire disc to replace the Torlon disc for good measure.
I wanted the best performance possible from the SME V/TT combo. Even got an Ortofon Verismo to hang off it.
Talk to Alfred. He’s a fund of information, been at this for many decades, and ASK him about silver or whatever your choice is. And yes, it’s a continuous run from cartridge clips to RCA jacks. He claims - IIRC - a 3 or 6 dB gain by removing contacts and using better wire than factory (mine was older than yours by several years).
doesn’t hurt to ask.