I, too, would go with a three-point mower.
I use a Woods rotary for rough mowing and have a smaller "yard tractor" (big riding mower) with a 50" deck for clean cutting. My tractor is a 43hp Deere 4600, so can drive a 6-foot rotary cutter.
Off topic, a bit...
One thing we found when shopping for smaller (28-30hp) tractors was that the Case brand tractor weight nearly 50 percent more than a Kubota of similar power. The case was 1200 pounds vs. 800-something for the Kubota. I *like* weight in a tractor, as it means traction and lifting capability.
My 4600 has fluid in the rear tires, front-wheel assist and a front-end loader. Without the loader, the front gets light when the mower is off the ground. Steerable but light. With fuel, etc, the 4600 and loader are in the 5,000+ pound range; about right for a small acreage. I mount a 7-foot, two-stage snow blower on the three-point hitch in the winter.
jb