Actually, 5/5 Arcane Focus means you're never gonna miss your polymorphs, but I suppose that if you have 160 spell hit rating for fire you can get without it, yeah.
And why'd you want Blazing Speed, Ranzo?
In any case, here's a PvE Elemental Shaman build I thought:
http://www.wowhead.com/?talent=hEczq0MsAotZVoez0x
Three points in Elemental Warding to save our healers some mana.