Ricardo,
I count 14 transistors plus the outputs for a power perhaps 145W?
You have a commendable THD but at high output you have a high level of H5, less than 10dB below H2.
This amp will sound clean but a little sharp because of this H5 artefact.
Although a good amp it seems to be over complex. You should be able to do a very good amp using a singleton input stage with no more than four transistors plus the outputs.
If you use the ECW20N/P20 series of Exicons, you get double die with 200V, 16A, gm of 1.4 and 250W.
Finally, a bias gen for laterals need only be a resistor and a cap. Run the outputs around 200mA quiescent and they will always drop slightly at higher levels - foolproof.
Very good VAS transistors are 2SC2682 and 2SC3503. They have pnp matchers and their speed, Cob and cost are very reasonable. If you run these transistors at 15mA there is more than enough drive to shake the gates of the laterals. You will need heatsinks, however, THM Aavid 6030 series, 16C/W.
Hugh