With a blade, it isnt just about the weight, but the distance behind the rear. A 700# blade hanging 3-4' back would do as much good as 1000# in close.
Nice move tho. Do you think 1000# is enough? Is it enough to max out the loader lift. 1600# shouldnt be close to the max you can lift? 1000# was sufficient for that, but what if you lift 2500# +/-? I would think 1000# wouldnt be enough.
I know your tractor weighs alot more than mine and has larger tires for fluid. But my 1000# ballast barrel is none too heavy when lifting to the max on my machine.