I would never run my EGT that high. 1350 max maybe but your number look a lot more realistic when it comes to power and torque output.
Yeah, sorry, that was a mistake. Now I've redone it at 1350F (730C): BorgWarner MatchBot
Drive pressures make more sense now. That calculator doesn't take into account pumping losses from drive pressure so it shows no difference in power from a smaller turbine with higher drive pressure.
Now on the EFR7064 turbo.