@JasonHTML: I'll get some more polycounts when I get home from work, but I'm wondering why you'd want to know how much it'd be without the balloon?
@Wildbil: if you can remember the name of that game, I'd be interested to know. Aether ships and airships are super-cool to me right now.
@Jerok: Yup, you're right, if the walkways were alpha'ed planes, then the poly count would definitely take a nosedive. However, it wouldn't look as good close up. Though, something like that might be useful for a long-distance (Level Of Detail) model to save some poly's. Thing is, I'd never really imagined more than one of these on screen at any one time. It's a level/vehicle, almost.
@Musashi: Thanks! I don't mind UV unwrapping much, but the longer I look at the model, the more my texturing appears to suck. I think I'm going to have to go back and change quite a lot of it (for example, the 'braces' that hold up the walkways). But I'll try to get through it first - posting a dodgy texture might be ok if people can edit them later, after all.