Re: "I’m hoping to produce a small stream"
You will need to have a steady constant flow of air passing over the heating coil using a fan or air pump.
You will have to experiment with the coil voltage as you need it hot enough vaporise the liquid but not to hot to burn out the wick.
Depending on the liquid you use you will also have to experiment.
My suggestion would be to use vegetable glycerine
diluted to about 50/50 with water as a starting point.
The other members that have been doing some fantastic experiments will probably be better suited to answer your question than me.