Nice amplifier that should work.
You have done a good job.
I'm starting to like the updated "classic" designs again. This circuit reminds me of the first transistor amp I "designed" and built in high school. I had successfully designed and built a great tube amp but I did not know how to get the results I wanted from transistors. The amp (more modest than this design for sure) did not initially work as I had intended (terrible in many ways) but by making adjustments and scaling resistors I made it work pretty good (although at the time I couldn't tell you why). In fact it still worked 35 years after I built it when I finally gutted it to use the enclosure for another project.
Since I had the single ended transformer (not very useful nowadays

) and boxes of salvage parts, I breadboarded up a headphone amp similar to "Death of Zen" with a CCS biased output transistor. This is a departure from my usual tinkering. To say I was impressed is an understatement.
With modern transistors and premium parts available, this topography deserves a second look.