That's awesome! Nice work!
I agree with you about the foam though, it just looks kind of static. The rest of the scene is very cool.
Edit: You could try searching around to find a good foam texture. Here's one I found on a quick search in Google Images. Then, you could make it seamless and make a bump map in Gimp or Photoshop.

Can't wait. 





One thing, the animation is kind of rigid. (e.g. sharp, quick 90 degree turns) I don't use this plugin so I don't know. 