Thanks...had a drink spilled on my laptop, and didn't have much spare cash for a bit to get a new one.
But no, I really don't think it's a wise use of effort/time in the gym. I've known guys pulling like that in the 700's who have trouble pulling 4 plates from the floor.
I don't think you necessarily need to be "used to" super heavy weight to deadlift heavy, if you know what I mean. After my last meet about 6 months ago, I didn't deadlift once until about 2-3 weeks ago. For the last 3-4 months, my only squat variations has been front squats. But my first time deadlifting again, I hit 585 for a pretty easy single, and a week late pulled 605x4, all after a complete lack of heavy training for back movements, with the exception of doing rack pulls once. Now I realize this is at least partially rebounding, but if not always training super heavy was that much of a mistake, I would've expected to see a lot of regression.