FF IX Bahamut for Students to Rig

I decided to model Bahamut from Final Fantasy IX for my students in 3D Character Rigging. I figured it would be good practice for them to try rigging a creature for their second half of the quarter. I started on the base mesh this morning and did sculpting on it off and on today. Here's what I have currently. It's been a bit hard to find good references for him, so I'm making a lot of stuff up.