Simple really….
You have a very good cartridge (not overkill by the way) on a solid turntable. May be the table isn’t as good as some other higher end belt drive models but even with the amplification chain you have listed you are unlikely to realize full potential of your analog set up. So bottleneck in my opinion isn’t your analog front end.
https://www.stereophile.com/content/gramophone-dreams-4-page-2

