I believe you and for the reason you enumerated i am pretty sure your system is at least very good...
You gave as much importance to installation , embeddings controls and optimization than to upgrades in your post than i trust your impression ...😊
Certainly my own system as over decades I developed, vetted, tweaked, and generally made my gear heap conform to my personal taste, which results in an astonishingly well sorted sound in my surprisingly great sounding room. Utterly personal of course as most of my friends don’t care at all, and I don't have a stream of audio geeks coming by with their preferences in their addled brains. As a certified "knob turner," working musician and concert producer/sound mixer, my taste has been formed from live music which I can instantly produce by playing an instrument, although listening is easier. Seriously, you have to take a uke off the wall, tune it, take a guitar out of its case...check the humidifier, change batteries in tuners...click a switch on an amp...it’s just so much