I bought one to do the same thing with the cylinders, but as a snow plow. The remote would have left and right, center off. I only bought the pump. I see double acting cylinders but the rod size is near the bore so pulling is not much force, it relies on pushing. Hydraulic would have a T connecting one rod side to the other push side. That makes it a forward and reversing valve, probably a blocked neutral position.
The pump sucks for flow, but will make workable pressure. I had the specs but don't see them at the moment. Please post them when you have OEM numbers. Notice the size of the cylinders on the articulating unit...small.... and of course a hose with about 3/8" cross section gives away the small flow. If your cylinders are not about the size of those on the machine, it may seem painfully slow. Flow around 2 gpm, I think.
That is unless you could store some energy in an accumulator.
Without going to the trouble of mounting the unit, hook it up and try it. Determine which side is pressure when you energize one valve at the same time as the pump (solenoid). It can shoot 20', so be prepared.
There is no calculation required, Your system can take all the flow this pump can produce (x20)... just make sure the relief matches (or lower than) your crane valve.
I have PTO's for sale and have a kit for direct mounting a pump, SAE B and 11t spline if you change your mind.