Im ready for and upgrade from a spinner 2 battery with a kanger Aerotank V2. I want to get into building coils. Do I need 30, 40 , 50 or 100 watt mod? Some tanks that interested me is the Kanger Subtank mini, kayfuns, Atlantis for example. The mods is my problem because I don't know the minimum watts I should get? I was looking at the eleaf I stick 50 watt, Rdna 40, etc... Clouding not important to me but if I wanted to maybe so.