What are the other oils in the blend? You can put the percentages through soapcalc if you know what else is in there, I am guessing soybean oil? To a good guideline for what your soap will be like you need to know every oil you are putting in it. (At least I do). I would add more olive oil, but I am going to wait for more experienced soapers to come along and better answer your question.
Yes you can add oils, you may want to add a hard oil such as lard, Palm, coconut, or tallow.
ETA: Dixie, I think we were writing at the same time, I don't want you to think I was calling you inexperienced, I was just calling myself that.