Not that I want to criticize anyone for wanting to do a cool project, but have to wonder why? Overkill is a massive understatement.
And how are you going to move it, and with what?. 17' of that beam is in the 3600# range. That cylinder likely to add another 1000#. Axle....Another 1000#+. 100 gallon resivor, pump, massive valve, misc....Another 500#. Motor...500#. 100 gallons of oil...800#. gonna easily be a 8000-9000# splitter if not more.
As to functionality, its not gonna cycle very fast. A cylinder that size, just to cycle out and back 24" is gonna be a 14-second cycle. Which is on the slower end of what's made today.
With 165 HP and not really needing alot of psi to do the work, I'd go a good but bigger on the pump.
But all that flow comes at a price. Large hoses, fittings, and valves. You are likely gonna spend more in just the hoses than most people spend in a whole splitter.