I have a 90's model JD 5400. It's only about 6 more HP, but it's rated to lift about a 1000 more pounds. It also weighs 1000# more. If you went with a pull-type 606NT, I don't think you'd have a problem. You are right at capacity with a dry drill as far as 3 pt capability. Plus, if you have hills the 3P606NT throws me around some when raised and I'm much heavier, as far as tractor weight. I'd definitely want to hook to one and see how it goes before biting the bullet.