I just finished a 100% coconut oil soap earlier this week. Be prepared for this soap to be very hard! I used only 1% superfat and after only 16 hours of curing the soap was so rock hard is destroyed my soap cutter. I had to buy a new one and cut the rest of the loaf with a large knife.
That soap would skin the hide off of me and I can use soap at 20-30% CO. I use 100% CO soap with 0% SF for laundry. Never on the skin. Any high coconut soap will need to be cut sooner than a well balanced soap. I cut my 100% CO Salt soap at 3 hours. None salt at bout 6 hours. They will be hard but won't last long. Difference in hardness and longevity.