I'm new to sub ohm vaping, and I was planning on getting a Kanger kbox for a cheaper way to try it out. I currently have an Aerotank V2, and was wondering if I could get away with using that until I can pick up a Subtank mini, or Aspire Atlantis in a couple weeks? From what I gather I won't be able to use it at a higher wattage, but will it still be ok up to maybe 20w? Any input or suggestions on Aerotank wattage, coils, and if I should go with the Subtank or Atlantis would be much appreciated.