I'd be concerned about how well you will digest and metabolize all of those supplements. Years ago, I had "alternate doctors" or ND's give me whole boxes of supplements, but in every case I could not digest them well. I have since then found supplements I can digest and metabolize, by trial and error in some cases. And I believe these supplements are very important to me. But indeed I have to take them in the right order, things like magnesium at meals, calcium between meals, and so forth.

I know you are gastronimcally sensitisve as I am, Dejibo, so I expect trying all 20 at once time ( that is, in the same day) may not work well. But since I don't know what you have in that group, I wouldn't know what to suggest you start with from among them.
I too will be interested to hear more. And may it work for you!