I would map the main frame , and the two arms and maybe the cylinder and ram. The parts that would show a lot of wear and crease. Its easy enough to rescale the geometry in poser, and a lot of freebies have odd scales to them. If you work in real world units in the modeller its much easier to set sizes, but it will be very big in Poser. You are doing really well and should not need much help with future projects. You might consider doing something for sale in the store.