Apologies, DeeAnna! Crock pot hot process. I’ll end up trying bothI know a lot of soap making lingo, but I have no idea what CPHP is.
Kokum butter is a fat, so it's going to saponify in a more controlled way compared with stearic acid.
But in the end, you should do what you want to do. I'm sure either choice will produce soap in the end.