Reputation

Building a rep is of course important. Which should the hunter get the love from first? The first two I'd recommend are the two that you want to have toward the "end-game" of WotLK; The Sons of Hodir and the Knights of the Ebon Blade. They don't have juicy epic gear rewards you'll be interested in. They don't get you a nice big dragon mount. They do get you what you'll really need.

For the Sons you want to get to Exalted status. They provide the shoulder enchants you want. Their low-rep shoulder enchant is the same as Aldor/Scryer shoulder enchants. The Sons don't have a tabbard, so you have to get rep with them the BC-fashioned way, daily quests. For Ebon Blade, you'll want to get to Revered status. Luckily, they have plenty of quests, daily quests, and a tabbard! They have some nice weapons, but most importantly, they have your helm enchant. Until you're Revered, you'll be stuck going back to Cenarion Refuge with your new helms.

After you have those two reps in your pocket, then you can shoot for another one. I'd pick something based on your crafting pattern needs, or perhaps The Oracles for their trinket. Unless you only have time for dailies and never any heroics, you're likely to fill any gear blind-spots before rep-based gear saves you.