When making the Herbal Calcium tincture and the Lung/Bronchial tincture, we DO tincture every herb separately and mix them in their proper ratios (so the Lobelia in those tinctures is tinctured by the 2-part method). Why these two, and not the others that contain Lobelia? "Herbal intuition" - no more, no less.
(The complete post talks about using ACV and vodka when tincturing Lobelia and other helpful information Uny posted for your November tincture making.)
I Do NOT know for certain, but I can't think of any reason that the first tincture you made with the 4 herbs should not be healthy and good for you. Of course, it will not be the same as tincturing each herb separately, but it has to be good stuff...