It looked way too high to me. Also, your knees looked like they were buckling and I swear I saw you visibly age during the squat. I think the weight is too heavy, you're too old, and much too weak. You should drop out of the contest immediately if not sooner.
Seriously though, it looked a hair high, but the speed was easily there. If you nail the depth, you've got the weight. I'm thinking a 500 lbs squat is not out of the question.