Using preamp's balanced & RCA outputs at same time

I have a set-up with one amplifier per monitor and separate self-powered stereo subwoofers. (The monitors and subwoofers were designed together, and match each other well.) Currently, a balanced cable runs from the preamp to the crossover in each sub, and a second balanced cable runs from that crossover to the monitor amp.

The preamp has both balanced and RCA outputs. I am considering changing the configuration so that separate cables would run from the preamp to the sub and to the amplifiers for the monitors: Balanced cables would run from the preamp's XLR outputs to the self-powered subwoofers, and single-ended cables would run from the preamp's RCA outputs to the monitor amps.

The reasons for doing this are:

1. To remove from the signal path the switch, connectors and capacitors in the subwoofer;

2. To utilize silver Eichmann RCA connectors rather than XLRs in the cabling from the preamp to the monitor amplifiers, aiming for lower distortion; and

3. To achieve a more accurate bass rolloff in the monitors by adding a capacitor to the amplifier outputs that exactly matches the input impedance of the amplifiers.

My question: Has anyone run a set-up like this, or something similar, where you were using both the XLR and RCA outputs from your preamp? What is/was your experience?