I dont understand what do you guys want to achieve? why NOT use a base and then pull the alkaloids with a non-polar? sonofsnow, the process you are quoting from entropy is called a defat, and imo it is unnecessary and wasteful at least for mimosa extraction, as you would basically have to use a lot of those solvents to remove a bit of fat which isnt even a very problematic issue with mimosa. A recrystalization of the final product is much more effective as it cleans up a lot of dmt with just a bit of solvent.
sonofsnow, if you want to ingest orally, dmt in its salt form is recommended. You can simply boil the plant material in water 3x, filtering/decanting and adding fresh water each time, put together the liquids and discard the solids. Like this you'll have your alkaloids in solution and they will be in salt form. This will also contain some tannins and other things that may be a bit too harsh on the stomach (you can look up 'egg white tannin removal' which will help a bit with diminishing bad taste and nausea, but will give you all the effects. Or if you want a purer product for ingestion, you can also base the solution, pull with a non-polar solvent (like limonene or naphtha, but imo better limonene), and then salt again the limonene with for example FASI or FASW or vinegar and dry that, leaving you with purer salt alkaloids (though vinegar salting will remain as a goo, not solidify).
if you want to smoke the dmt, you'll have to freebase that.
I hope you are understanding a bit better.. keep reading

Teks like vovins or others in the nexus WIKI explain what is happening in each part of the process, so read many of them to get a general feeling