Look Ok but transistors T6 & T7 wich is protected circuits is BC 547 on 55V if
this is no too much for this type of transistors.
Schematic is very complicated why dont you use only 4 transistor for outstage
for example 2xBD249 & 2xBD250 i think that is simple solution.
Are you try build this?
No, i just watched the schematic and thought there was an error in it and i wrote about it. At the last moment i noticed i was wrong so I edited my post and removed notice about the error.