thats quite a complex subject, it would be up to your own skills as a sculpter to reproduce every little hose etc..i know the clay is up to the job and from a molding/casting point of view i would think it would need breaking down into sub assemblies especially the large hoses,
i forgot to mention i brush on i.p.a. to get the surface even smoother(gets rid of fingerprints etc), also medium seems to be the best shore/hardness to work with in my opinion, it seems too hard at first but soon sofens up once you start working it
good luck on your work
chris