I don't use PKO right now and my soap is very hard. I just up the coconut a little or use lard. Sometimes, I use soy or beeswax at 5-10% to get a super hard bar.
Definately get the pouring pots! They are less messy than improvised ones. If you need additives (vybar, UV inhibitor) BCN has a very inexpensive all-it-one additive.
Are you talking about ones with dome tops and beveled edges? You can get a mold that does that. I have a polycarbonate mold that makes a domed to with edges.