I recently found this guide:

http://www.blizzardguides.com/Enchanting_guide.html


That tip about the shield stam enchant really helped, was running out of mats in the 270 range. Over 4 days I got my 5 shammies to Darnnassus to pick up that BOP limited spawn recipe and dream dust wasn't too expensive to buy up. Now all are at 290 and waiting for a friend to make me arcanite rods (now that there's no cooldown on arcanite xmutes, it was easy to get all the bars together.)