elemental force is the right choice because your time on target is going to be so poor. LvL 22 for frost shock i presume? If you're level 22 thought i would make the most of the crit scaling and use black wolf bracers and cobrahn's boots.
beefcurtain's advise is solid but shamans cant use swords and i would stick to the monkey ring , you cant gear a sham like a rogue, some stam is necessary