That's a LOT of geometry. Woah. Seriously, that model blows me away. The only thing I can say about texturing is Good Luck, cause you're gonna need it.
Somehow I doubt straight UV mapping will work (or really be feasible, time-wise) for that, I'm inexperienced in texturing but I know there's things like texture projections that you could do.
~I have no idea what I'm doing~