Emorrisiv, one thing you will find in working with cartridges in general is it is best to keep your connections between the cartridge and the preamp to a minimum.
In the case of an SUT, I think you will also find the cable **after** the SUT to more critical than the one before, as the impedances involved are much higher at the output of the SUT and so more susceptible to cable issues. By comparison, the cable from the cartridge (if the cartridge is properly loaded) is relatively non-critical, especially if you run it balanced, which is possible if you have an SUT.
In the case of an SUT, I think you will also find the cable **after** the SUT to more critical than the one before, as the impedances involved are much higher at the output of the SUT and so more susceptible to cable issues. By comparison, the cable from the cartridge (if the cartridge is properly loaded) is relatively non-critical, especially if you run it balanced, which is possible if you have an SUT.