Air over hyd is the simplest as mentioned . You only need one cylinder and a directional flow control and an accumulator or small tank,a piece of capped pipe would be cheap. Air regulator for lift control speed.A three way exhaust valve to supply air and exhaust when down feeding. Air to tank forces fluid past the check in the flow control, lift speed is by regulator setting. The manual valve exhausts and blocks air in for down feed which is controlled by the adjustable flow control from the cyl. Apply air and the flow reverses past the check for speed up. You could get fancy with a solenoid for air control for p/button operation. You could put two meter valves(wo checks) in parallel for hyd control up and down.