hey great strength Jason
here is Paul Demayo(RIP) who I think may have been the first ever bodybuilder I saw on the front cover of a bodybuilding magazine when i was staying with my Grandparemts in Baltimore, MD( big city) when I was a kid in the late eighties or early ninties.
anyways I was listening to Jay Cutler Mr O recently on a talk show that mentioned he used to go to the same gym Paul did(they were both from Massachusetts) and he never saw Paul using any more than 315 lbs for squats and look at his legs. Paul grew even bigger later on in his career.
Youll probally never see me squat more than 3 or 4 plates..used to squat 4 plates 7 years ago. I do more heavy power type training when not getting ready for a contest. (and I still dont go crazy heavy like yourself) maybe one day when my tendons can handle it) -haha
YouTube - bodybuilding - Paul Demayo/Quadzilla - best legs ever!!
regardless, what you are doing is working for your strength, keep up the impressive power numbers.