Ive tried your acetate evaporate-conversion and it never worked well for me. It still smelled weird with a touch of vinegar even after very long. Ive used two different white pure vinegars. Maybe with pure acetic acid it could work better.
Amor Fati has mentioned in another thread how after a few times of vaporizing the acetate evaporation-conversion product, it felt somehow strange, with a sickening taste. Unless it is tested analytically, its hard to know what impurities are left (and how much this depends on which vinegar people use around the world), and most specially for those smoking and not vaporizing, the pyrolisis of the potential extra compounds might make this even less safe.
The BLAB tek conversion is another alternative method that wouldnt have certain of the unknown issues of the evaporation (and if youre anyways using acetone with your method for infusing the herbs, the only difference is the sodium carb before, which can be easily found and for cheap). Personally I preffer working with fumaric acid anyways, but vinegar has the advantage of being easier to find. Anyone wanting to extract should anyways read up on different methods and decide what works out better for them