I aim for one hour or less, but could see stretching it to 90 minutes.
90 minutes if you were taking longer rest between sets, and really pushing higher % weights for your worksets.
This workout is kinda decieving in it's apparent simplicity. By the time you've completed the first two compound moves, cleaning the weight for the presses is harder than you think. You would lose so much if you had the weight on stands. I believe that it is not just what moves your doing, but the order your doing them, and how your pairing them together.
That approach may not work in all situations, but with this type of compound workout, it will.