It's very interesting to read everyone's opinions on the matter. I tend to agree with you, there might be a few more victims but not a big number. I think he might have been more active as a rapist an probably molested several women in between killing. Sadly those crimes often don't get reported. I wonder if he was mainly a violent rapist who killed when totally lost control and had the victims recognize him. This is just my opinion of course, I'm not an expert of such behaviours.