I run a 54" woods behind my 2620. It weighs around 500lbs, and you know it is back there. I work on some relatively steep ground, and I would not any heavier of a cutter back there. My tractor has ample power to run the 54" unit, and I am quite sure it would run a 5 foot model-the question is the weight. PSDStu's 3200 is a larger, heavier tractor. It would great if you could try a 5' cutter out before you buy.
Will