I seen this workout post from GV before. It was part of a faq post on another forum (can't recall which).
I'm with you Dave. Gave the Mon. workout a shot the other day as well. Took me about the same amount of time. I eased into it though, using warmup loads to guage where the weights would be to fit the rep scheme. Tried to keep my rest periods at about 1-2 mins. Made sure my form didn't give out during the sets and if I felt I could go over the rep limit, I did. Long, tough workout but I thought it was pretty satisfying.