If you look at my Monday workout I didnt do over my working weight for my warmups. I pretty much followed what you suggested for my warmup weights. I think it is hard to judge how effective it was because I was already pretty spent from some hard cardio prior to lifting. I think I will see the most benefit on tomorrows workout when I take away the static stretching and heavy warmups and try what you have suggested.

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"You can succeed if nobody else believes it, but you will never succeed if you don't believe in yourself."
-William J.H. Boetcker

22 yrs old
6'3 220lbs
Goals: Add lean mass and cut body fat.