"...I am a little fearful of the 0% superfat ..."
Don't be. It's no cause for fear. Let me explain --
NaOH is not 100% pure, but most soap recipe calcs assume it is 100% pure.
The difference between the assumed 100% purity and the real purity of your NaOH (often in the mid 90 percents for most NaOH I know about) is what I call the "hidden superfat".
Real superfat = Desired superfat + (100 - Actual lye purity)
If you enter 5% superfat as the desired superfat for a recipe and are using NaOH at, say, 96% purity, the real superfat % is --
5 + (100-96) = 5 + 4 = 9%
This means a recipe at 0% desired superfat STILL has a 4% real superfat due to the purity difference.
I routinely use 2-3% superfat
and my personal recipe calc also corrects for the actual purity of the NaOH. In other words, my soap recipes don't have any "hidden" superfat.
So if I can make a soap with a 3% real superfat and have it turn out fine, you can make a 4% (or whatever your hidden superfat is) and have it be fine too.