I don't understand how the subject of making your own hydrazine ever came up. I once worked for a large refinery that used liquid hydrazine to drop their gold. This was proposed by the egg-headed PhD chemist that ran the lab. It was dangerous, violent, stupid, and worthless.
I don't think these types of chemicals have any place on this forum. This isn't Science Madness, thank God. IMHO, we should stick to the basics. Tried and true refining chemistry is pretty cut and dried. Re-inventing the wheel, in this case, is absurd. The science should never overshadow the art.