Yes, those numbers are not telling you that the CO in your soap is going to create a bar that strips your skin of oils, and is therefore drying AND that your soap will melt away very fast in use. CO soaps don't last very long because they are very water soluble.
And if you turn the percentages around and make it 70% OO and 30% CO, the numbers won't tell you that it's going to be a very hard bar after a decent cure, but it will be because high OO soaps get nice and hard.
If it were my skin, I'd go even lower with the CO, but it also depends on your SF and your specific skin type. If I was using the default 5% SF, I'd probably drop the CO to 15% or less, but that's me and my skin. Some folks are fine with high CO soaps.
The other option if you want to keep your original percentage is to raise your SF to 20% and add salt to create a salt bar. Many people here absolutely LOVE salt bars. If you do a search on the forum, you'll find a lot of threads on the topic.