^What MorpheusPA said!
Just don't use more than 20% Coconut Oil. More Coconut Oil than that, and the soap can be very drying.
Do use at least 5% superfat.
ETA-If you can get Castor Oil(check your local pharmacies), just 5% of that adds lots of good stability to your bubbles. If you can get it, use 25% Olive Oil, and 5% Castor Oil with the 20% Coconut and 50% Palm.