JQ Power JQ400 with full size Skidsteer stump grinder.

This JQ400 Mini Skidsteer pulls its weight. This full size high flow stump grinder is designed for a Min flow rating of 14 gallons per minute but should be run at 25 GPM. we welded a bracket to go from mini skid quick attach to the bolt on flange eliminating the Bobcat style quick coupler as with it on it was too heavy to lift. Will this 14-25 GPM grinder work on just 1/2 the flow from our two pump 13 GPM Chinese Mini Skid Steer?