As an alternative, may I suggest to take your old alcohol stove and convert it to kerosene. It will likely only require changing of the jets.
Kerosene is the ideal cooking fuel in a marine environment. It is much safer than alcohol and MUCH safer than propane. Higher energy contents, worldwide availability, nearly unlimited storage life, low cost, ... And let nobody tell you it smells. Properly vaporized kerosene burns without any smell.
Only downside compared to propane is that you have to preheat for 3 minutes, so the galley is not exactly like in your home kitchen. I actually like it that way, makes me aware that I am on my yacht. Compared to pressurized alcohol, I see no downside at all.
I find it amazing that people use any other cooking fuel on a boat.