I'm gonna be honest here and say this would be a terrible idea for the OP to do.
First, as a powerlifter technique is extremely important to his success, and if you think his technique won't have to to hell in a band bag by the time he was even half way through this you're dreaming. This means that, on top of him ingraining bad motor patterns, there would be a significant increased risk of injury in a sport that already has a high potential risk of injury associated with it (due simply to the nature of "maxing out" with the heaviest possible weights).
And even if he was able to make it through this whole workout, what could he realistically train for the rest of the week? You basically just had him trash all 3 of his primary lifting patterns and associated muscle groups in one foul swoop. He'd pretty much be layed up and unable to train anything of significance for a while afterwards. Not the most intelligent use of his time or energy.