It takes "tonage" to push a blade full of dirt. Dozers (blades) that are designed to carry dirt are in a "U" or simi U configuration. I just don't think you'd be happy with a flat, lightweight blade on a 3500# tractor. Not downing your machine at all, but for pushing as much material as you describe, and the price of the blade, you may as well pick at it with your tractor fel & box blade. Now that blade you describe would prolly be real nice for finish grading (1" minus cuts) but it just is not heavy enough to do what you describe, the slightest down pressure on the blade will make your 4wd inefective real fast. Ever noticed how when using your fel, that slight uplift when loading your bucket transfers a bunch of weight onto your front axle giving you some good "grunt" into the pile? You will not see this effect with the dozer blade on your tractor, if anything, the opposite, or what I described above will ocour.