This will be my first official post on here!
I've made a number of laundry soaps, both CP and liquid. IMO, coconut alone can be a little harsh for delicates (in fact, I've moved away from coconut only for ALL of my laundry soaps). My favorite is either 75/25 or 70/30 coconut and lard with 0% SF. If you are washing in cold, you will probably need to pre-dissolve the soap. I do not use borax (makes me itchy), but I like using Calgon's water softener and washing soda. You can pre-mix the soap and washing soda, then add the water softener to the load.