if you are using mhrb there is no need to do the initial acid step, just add lye to water then bark mix and add naptha, mix> decant> freeze precipitate.
3. no
4. no
5. no
7. use the straight to base methods for mhrb and use that ratio 1:1
10. gentler mixing (rocking motion) and adding NaCl or heating can break these emulsions
11. should be fine to use, and you can always clean your solvents up and re-use them as many people do; with and acid base wash of the solvent to get out plant fats and get any extra left in the solvent.
all is one, one is all, everything is.