Great post, and that sounds like as good a "system" as any.
I may not be of much help, as my system went like this:
1) Buy as much shave soap as possible
2) Buy as much shave cream as possible
3) Buy all the razors in sight
4) Acquire loads of every type of blade availalbe
5) Try EVERY single aftersahve out there
6) Repeat above 1 thru 5
7) Use stuff at random
There has been/is no method to my madness, and I'm still buying shaving items like a drunken sailor (no offense Doc

).
It has been a great deal of fun, and I'm not exactly sure how or when things started to fall into place, but rest assured that they do.....and I can tell you that you'll probably advance faster than I did with keeping a journal and the evidence of your intent to take a more scientific approach.
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