@GemstonePony I did some research, and you're correct. Essential Oils do not contain triglycerides. They're composed of other types of chemical groups, terpenes, esters, aldehydes, etc.
I did, however, go through my notes and looked at some of my first soap attempts. I noticed that some of the times, when I went crazy with the EOs, (1 ounce is good, so 3 must be better!) the resulting soap was softer. Even after letting it cure for over 8 weeks, the soap felt like I could smoosh it with my hand. So I guess there is an upper limit to the amount of EOs you can add to your mix, but it doesn't look like you need to adjust your superfat value too much when adding true essential oils.