My goal is to achieve more "magic".
I have listened to some other home systems
that I want to emulate as best I can.
All had multi subs.
I added subs to fill-in the bottom octave, but for me the magic is found in listening to voice. Subs can be a step backwards and should be added after your system is magical and should have a subtle effect when added to floor standing speakers. Your speakers are 3dB down at 35Hz, so close to my small floor standing speakers (31Hz). Room acoustics and power would be more a focus for me. When I say power, I mean clean power where large amounts of current can be supplied when needed and all components are isolated from each other. Many people dabble and put together their plug to component power supply in a piece meal manner. The most transformational change in my system was adding the Shunyata Everest and NR power cables. I had to work hard at taming my subs, which included a heavy/massive equipment stand and bass traps. Choice of streamer/digital cables were critical with streaming and upgrading my DAC greatly helped. My cartridge choice and phono preamp were critical for vinyl play, but all of it depended upon clean power and room acoustics..not the subwoofers.