You can see the result at the video below. Don't forget that this took us only 30 mins. Spend some more time with it and you'll have an awesome result. I've tweaked a few things for the final render. I've added some Brownian force for the particle system, increased the height for the particle emitting waves, added a subdivision surface modifier for the tall waves. I would suggest following the videotutorial and building your own scene. Lots of potential here.
You can (as always) download the final file through blendswap. You can get it by clicking here.