You always have good advice, Sham.

I found that the 40g mark was a light as i could go and still keep the blade in control. I plan to use the scale for feedback to try to lighten that pressure even more.

My biggest problem (that I knew about) was my unconscious tendency to apply more pressure: i'd be trying to keep the blade feather light on the stone, and after a few strokes i would notice that I'd be bearing down (again!) so I'd lighten up... for a while, and then I'd be bearing down again. (roughly in the 70 to 80g range.)

The biggest advantage, as Glen pointed out, is the ability to "quantify" the appropriate pressure.

FWIW I just weighed the razor I used on a more precise and accurate digital scale and it weighs 38.5 grams, so I'm in there at "the weight of the razor only". That is somewhat encouraging.