I run a LP 2596 cutter on L4060HSTC. Mostly flat or slightly hilly ground with some hills. With the small tires of the L4060 I tend to go slower than some because I don't like the bouncing when going fast. I have had no trouble cutting grass and weeds on roads and fields, and it is MUCH better than my light duty 6 footer. With loaded tires and loader on I'm at nearly 6500 lbs. It has no trouble with the 1380 lb cutter. Sometimes I run semi-mount but usually I keep it 3-point. I don't think you'd have trouble with a heavy duty 6 footer. But just my 0 cents.