Hi. My name is Kelly. I have a B.S. in Chemistry. (As well as a B.M. in Music, but that's not really applicable here.)
I understand where you are coming from about understanding the basic stoichiometry of the soapmaking process. It's something that I used to help me develop my own recipe. My understanding of the chemical properties of the various oils and butters, and their carbon bonds, was helpful.
Most people in this particular forum are not going to have the amount of schooling necessary to grasp some of these concepts. I say this not to be mean, or to dismiss their ability to "get it," but because some of this stuff doesn't get taught until organic chemistry at a minimum, and most people don't take that level of chemistry unless they are going into that field. Same with calculus - most people simply don't take advanced levels of math because they don't have to. And that's ok!
I will say that your process seems overly complicated. It is much easier to streamline it and add all oils and butters upfront, as soapbuddy recommended. However, if this is what you have determined to be best for your recipe, then keep doing it. I add everything all at once, because it's easier. I don't use beeswax in my soaps anymore, so I have no need to get anywhere close to 150 degrees.
Since you are very interested in the chemistry aspect of soapmaking, I might suggest that you check out Susan's blog:
http://swiftcraftymonkey.blogspot.com/ She is much more focused on the chemistry of soap and cosmetic making that most of the people here.