That DPS is not bad for your gear level. You need 342 spell hit to always land spells against a ?? (level 83) boss.

How long have you been 80? Why not T8 helm and chest?

My advice:

Get into heroics and clear as much as you can everyday. Save up 60 badges on your shaman, go buy shoulders and then buy helms. Now you'll have 2pc T9. From here, just keep farming badges until your shaman are 4pc or 5pc T9. It really is the best stuff you can get your hands on for the time investment / how easy it is.

As for gems and enchants: Your using the right meta, and from there you want 2 blue, so SP/Stam, or SP/SPI. From there, if you don't care about hit rating, gem PURE spell power. If you are not raiding, you only need ~80 hit for heroics. Any ilvl 219 gear or better, gem with epic gems, you'll probably hang on to it for a bit. Also get icewalker enchants on your boots, cheap cost and it's 12 hit and 12 crit. 23 haste to cloak isn't overly expensive and you'll probably hang on to deathchill for a bit. If you REALLY want hit, go snag the ebon blade rep cloak, but I'd prob stick with deathchill. If you are not farming ToC or the 3 new 5 mans for weapons, go ahead and throw 63 SP on your titansteel guardian. Snag the Totem of Hex from Conquest badges when you can. 8 or 10 stats to chest is nice as well, but can wait until you get T9 if you don't want to spend the money.

I would probably swap www.wowhead.com/?item=Glyph of Flame Shock for www.wowhead.com/?item=Glyph of Totem of Wrath. When I swapped from T8 to T9, I only saw DPS increase, this also means you want to spec all shaman for ToW. I would also take out the 3 points in Eye of the Storm and put them in Improved Shields. I also didn't take booming echoes and took 5/5 Convection for the overall mana reduction in spells I was constantly casting, this is probably up in the air and your probably fine either way.

This is my usual DPS leader: http://www.wowarmory.com/character-s...n=Svperwrecked