why not spec http://talent.mmo-champion.com/?prie...6,ywJOqR,10433 ?
no need to spec focused mind, and shadow affinity
i specced like this since they implemented imp dp, and i never had issues concearning mana, and this is clearly the maximum dps spec
multidotting is the only reason to go oom, and focused mind has absolutely no effect on multidotting, mind sear spam is 15% more expensive, but you almost always have a spirit tap proc while bombing