I agree with Philip. I never understood why people have their low poly models in one smoothing group, unless you are working on a highly organic mesh it will look horrible. The normal map also looks ugly as hell and becomes a lot more difficult to edit in photoshop because of all the large gradients.
Regarding your low poly I'd do the following:
- If you can use two maps for this, use one for the body and another for opacity mapped details
- You can save polies on the handles by using simple planes with opacity map instead of cylinders
- You can remove a few edge loops on the top part (like the one crossing the model in the middle). You could also remove the bevels on the top part, you can suggest that with the normal map.
- Do what Philip said and model the interior with the polies you saved!!
Good luck!