Hey TricksterofNoke,
Sorry I missed your intro essay, I feel bad! Glad you bumped it.
I am really happy to hear that DMT has been the most influential tool in your personal growth! That is quite a statement, I am sure many people here feel similarly.
Changa is just caapi and DMT. Most of the herbs people use don't really have much of an effect other than the power of suggestion. I would suggest using caapi leaves and mullein, because it is good for the respiratory system, smokes good, and absorbs DMT well. Lavender can be added for its calming effects and pleasant aroma. Personally I also add a bit of white sage, like a pinch, because I love the stuff.
Do what you feel is right, of course, however I personally feel that some people are just not meant to use DMT. It is a very powerful substance. I feel it takes a certain kind of person, usually with a certain amount of experience with other substances before hand, or else I wouldn't even consider mentioning it to them at all, but that's just me.
Welcome to the DMT-Nexus. Don't worry too much about being a shaman, just be yourself. You don't have to be a shaman to use DMT.