That is definitely an option if you're fighting a full AD team.

As far as Dead Man's Plate, I don't mind not being able to proc the second passive because of how much pure stats it gives. IMO Zilean needs to survive, and 60 MS, health and armor, does that really well. You could go Randuin's Omen instead, but I really love the 60 MS and I've had many games where I had to run across the map to ult someone and only made it there by seconds most likely because of DMP.

Hi I'd like to hear about your item choices a bit.
Would you buy Athene's Unholy Grail whether or not the enemy team had any AP threats? If you're against a full-AD team would you maybe buy Morellonomicon?
Also, why Dead Man's Plate? You can't use the second passive as it's melee only?

Thanks