I map for source, so maybe I could give the map editor for this a try.
I could try to make a map. Dunno how well that would work out though.
bjorno does some 3d modeling, I'm sure he could be of assistance.
I can do some 3D modelling but I'm only good with the tool Wings 3D. It can export into .3ds and .obj formats if you can make something of those.