Stepper motor with speed controller

I need the following setup for my pump system: High torque motor ( stepper? ) connected to control box on which I should have a knob rotating it to adjust RPM from 20 to 200. It should have display showing how many ml/m of liquid it pushes (using formula RPM x ml/rev so I need to set it up somehow into the memory), Also I need safety feature that if pump stuck and motor cant turn it makes sound. Attached is what I have on hands if I can use them or if new parts must be bought then will buy new.