The SUT load up the pickup coil inside the cartridge with a lower impedance and they
might change the response, depending on the cart impedance, especially in the high frequency part. IMO, you are giving up exactly what you are trying to gain by using a MC instead of a MM.
Moving Coil are much pickier to the amp chain, when compared with Moving Magnet. MC are much harder to cleanly amplify, because they generate a much lower voltage: 0.2-0.5 mV for MC, versus 3-6 mV for MM.
The preamp for those has to be INSIDE the turntable, or at the most VERY CLOSE, with a shortest as possible cable connection, double shielded. As an Electrical Engineer I am telling you... there is no way around this. Small gain preamp for MC that goes inside the turntable is the best solution.
This is something similar with what I used personally, installed inside the turntable, to boost the voltage to the MM levels (no RIAA correction in this stage):
Mark Houston has built the $49US Boozhound Laboratories JFET Moving Coil (MC) Pre-Preamp and he shares his experience with the kit. The pre-preamp is intended for use with MC cartridge where additional gain is required. The MC Pre-Preamp gain is 30dB.
diyaudioprojects.com