Has anyone used duel cylinders on a wood splitter?

[4570Man]

After my other wood splitter was stolen I need to build another one. To save expense I could use duel cylinders. I'd need a 5" single cylinder or duel 3.5s to nearly match it. Duel 4"s would exceed a 5" by 7 tons at 2700 psi. If I used duel cylinders could I put one on "float" and only pump fluid to one to provide faster cycle times except when I need the extra power. I plan to power this with an 18 hp Briggs&Stratton Vanguard donated from a Cub cadet lawn mower. What pump would be a good match?

 

[roadhunter]

High performance log splitting. This should be good.

 

[muddstopper]

Something like this one. 4.5in bore, 30 in stroke, 2.5 in rod, 33 and 42 gpm double pump set up as a high low to act like a two stage pump.