Since you'll be adding more of the inorganic chemistry towards the release, I'd suggest implementing complex chemistry too with it's pH/temperature requirements since it might make the mod a bit more tedious and reactions harder to upkeep. At the same time, this would allow reagents such as the Tollen's reagent [Ag(NH3)2]OH to exist within reason (and not just as the Ag2O) and could also expand into Analitical chemistry into the future as there are many pH sensitive reactions:
KCl + Na3[Co(NO2)6] = Na2K[Co(NO2)6] + NaCl in pH-s 3-7
KOH + Na3[Co(NO2)6] = Co(OH)3 + KNO2 + NaNO2 in basic conditions.

All the chemistry is already dependent on pH and temperature. There are currently no plans for any products based on complexes, so the complexes themselves probably will not become a part of base Destroy. They can still very easily be added with an add-on, however.