Experts please advise me what ratio would be the best for these two combinations? I have 30ml empty spray bottle to make this combination.

I also want to create New Pheromone Additive + Androstadienone + Perfumers Alcohol in 30ml. Expert's advice would be very much appreciated. Just these molecules not any other molecules for these mixes.

all between 10- and 30% should do nicely with the hedione. No need to fil the entire 30ml bottle. Put in 1 or 2 drops of Hed, measure weight with the scale and put in alc. for a 10% dilution accordingly - if you don't like the effects you get, do again with higher doses.

Have you asked Paradox' permission to try out Hedione (or "Heidone" as the expert calls it) as a pheromone first?