Fast Ways to Gear Up a 5man Team?

Hello.

Currently running a team of 5DKs. What's the fastest way to gear them all up quickly? I need gear to prevent allies from ganking me. Team of 5DKs are fresh 80s and have 13k HP each (so gear that buffs up health and survivalibility).

Dungeons/raids out of the issue, as gear drops only once and I would need to run those instances minimum of 5 times.

Ways I can currently think of are
1) quest items (Icecrown quests bugged for DK, cannot continue quest chain to get gear)
2) PvP (havent tried this yet)

Is PvP viable way? Is it like Gamer District where you get near honor cap every wintergrasp and buy tons of pvp gear quickly?

Only serious answers please.

First of all u should find a healer and farm pos and fos. There drop tons of epics and emblem of triumphs which u can use to buy the furious set.
In addition u should do all wintergrasp quests because they grant tons of honor.
Once u are decent geared u can start doing bgs.

Don't forget to collect you point every day as well, may not be as fast as you want, but it will allow you to plug the holes in your gear occasionally. Basically a nice upgrade across your accounts around every month or so.