Finally put together a video of some 3v3 matches with 3x elemental shaman.

http://www.youtube.com/watch?v=Gtgj6-LdK40

I originally used this team before I found a 5v5 healer, to get my relentless off set pieces. At this point I mostly use it to test macros, addons, and just for fun

I do want to say I have no faith in this comp - I don't think it's viable and you will see why at the end of the video. I can't see it getting much higher than 1600-1700. However, I highly recommend it whether you're getting ready for 5s or already doing them - it's great practice, the best way to warm up, and a safe way to test out macros and addons.