I have a J.A. Michell table with SME V arm.
C-J EF1 phonostage, as yourself.
C-J Premier 17LS preamp.
C-J LP66S amp.
I had a Benz Micro Glider, medium output, some years ago. A good cart which provided years of pleasant listening service. It just wore out.....
Currently have a Lyra Delos. A bit better separation and overall sound quality than the Benz in my humble opinion. Could be the line contact stylus working its design magic.... You would enjoy either one in your system, but I believe the Delos is what you're looking for.
Try the max gain setting with a medium output cart. Try 200 Ohms loading for resistance. You can run 47K Ohms, which is unloaded. Won't damage anything. Many people run their carts unloaded. Your Premier 12 mono blocks are top shelf amps, don't ever sell them....wish I had a pair!