Maintankadin has a couple of stickies in their "Gear Discussions and Advice" forum with gear lists (all the way from 333 to BiS). One of them has a long section on instances and reputations, while the other seems more focused on the philosophy behind gearing and how it might change as you gear up. You should be able to use this for a personalized strategy. There probably isn't a one-size-fits-all plan anyway because of professions (e.g. engineering goggles, or 359 BoE that require orbs if you don't want to pay the markup).
As for stats, from what I hear, it's pretty much all mastery from the word go, you should get enough parry/dodge from the gear itself and don't need to gem/reforge/enchant for it.