I am looking at a 2015 L3901 HST with all the rebates and have a 72" heavy duty Taylor Pittsburgh 366 Rotary Cutter. It weighs 800 pounds or so and requires 30 HP with up to 60HP gear box. I use it on tractors that are in the 40 plus HP now. Everyone is telling me it will work, looking for opinions. I cut tall grass and am concerned. Anyone has a 72" on a similar tractor. Thanks in advance.