Nice set-up! Love it. I think you will like the ecig adapter if you are quitting smoking the AVA atomizer is a beast. it is a craving crushing atomizer.
On your calculation are you factoring in the 6 batteries that come with the kit? Because if you bought the Thermovape by itself $210, and the charger kit $25, and another 4 batteries $20 you would be at ~$255, plus we are throwing in an extended mouthpiece with the kit, so you are getting the already discounted price, and saving ~ $15.
On question #2, when you get your Thermo look at the bottom, there will be a tiny #1 right by the "t" laser etched onto the device.
Idea number 4: we are actually working on this, that way when you need to travel, from one mm state to another, by plane, train, or automobile, the thermovape could be transformed into a powerful, compact LED flashlight. Obviously we have other accessories that we are making first. But this will likely happen, that is the ultimate stealth vape.... Pocket convection Vaporizer to functional high end flashlite in 3 seconds.
Consider you other ideas under consideration
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Cheers,
Tv