Armorgeddon!

I want to make a team full of the most armor-heavy champions in the game. The goal is to make a full, 5 man tank team, each champion scaling off of armor in some way, and then to stomp a game with this tough-as-nails team! Each champion builds tanky (final build should have a lot of armor, but should have a lot of HP and MR as well), and in team fights we all focus the apc so we can steamroll the rest of the team.

Only champions that scale off of armor in some way are allowed. They are as follows:

Are there any brave or terribly bored souls out there willing to give this a try sometime?

EDIT: Once I have enough people, I'd like to roll this out! I've made a chat channel called "Armorgeddon" for those interested.