I do have him blocked out Dave,
but am also using another low poly model as a kind of mannequin for a couple of bits, like the mask and boots, as well as the chainsaw and a couple of the knifes.
I find it a good way to get the scale of something without having to model a whole human first, but whilst still being able to look at all the angles in 3d.
I'll probably do the same thing for the apron, but the rest of the model I'll probably just finish from where it is.
Obviously the mannequin won't be in the final image....lol