Hm, so I'm not sure how this happened, but I overlooked a duplicated object that was adding about 600,000 to the poly count.
Highres is now 5,022,208 and low is 313,888.
@SJHooks: Y'know, it might actually work out. Not with decimate though; that usually destroys any animatability an organic model has. But if I bring the model down to the first level of subdivision, I get 19,618, which is easily doable on today's hardware. I was going to bake down to the third level (313,888) to preserve some of the dragon's original profile, but it wouldn't be so bad in game. Maybe I'll use it in a future project.
But for this compo, maybe I should keep up the visual integrity. Thoughts on the poly count I should take for this compo (not for a game)?