Idle oil pressure was reduced with just adding the turbo (no piston squirters yet).

I expect the idle oil pressure with the hybrid oil pump and the piston squirters to be close to the same as with just the turbo and stock oil pump.

I personally would not attempt to use piston squirters and a turbo with a stock 616 oil pump. The 20 psi cutoff function of the squirter would help keep the idle pressure from crashing, but I would have to see what the full power oil pressure would be like before considering a stock 616 oil pump. The Squirters pull oil directly off of the main gallery that feeds the mains and rods.