I use a very simple macro for multishotting whatever is in front of me while running: Hunters are a fast class right out of the box with Trailblazer and a Cunning Pet for Pathfinding, and is’t as gear reliant as other classes. Record your combats, upload them to the site and analyze them in real time. With the 850 itemlevel + speed, you pretty much hit the jackpot.
The MonkeySpeed AddOn for WoW displays your speed as a percentage of run speed. Here you can use any gear available with +speed and / or sockets. I came up with a formula that seems to fit it: -290 / (0.01379x+10) + 29, which suggests the speed cap from the tertiary stat is 29%.
