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Basically good. I would replace R8 by a RC series circuit to turn the P voltage controller in a PI one and cancel static errors (load and temperature dependant voltage variations).No need for special circuits, use external NPN bipolar transistors, like this
There's an interesting difference between the suggested circuit and yours. The linked circuit has no external gain elements in the feedback loop, just an output stage in voltage follower configuration. So stability with an universal compensated OP can be expected, if no large output capacitors are connected.please follow the link below
No, you can evaluate it in a simulation. The OP AC gain must be below 1, compensating for the external gain. So the resistor in the RC series circuit must be lower than the input resistor. C can be made as small as acceptable without reducing the stability. You can make it initially large and than reduce it for optimal behaviour with setpoint steps.can you tell me the value of added components