Hey bap, that is coming right along. I like the setup in pic#2 a bit better as the wall looks like it will be thin with the larger atty on the right side of the stem. Also it looks like that atty tank (sorry I don't recognize which it actually is) is held together better that you could unscrew the atty to remove it without some other section coming apart and staying in the pipe, which can be an issue with recessed atties.
Aesthetically, the three models of analog pipes all have the bowl taller than the stem, so maybe use the line that you cut for the bowl and not the pencil line below it? For the stem, I see you have three lines, but maybe keep it close to where it is now? The stem has to support the leverage of the mouthpiece too....
Also, what are your thoughts for the screen cradle and battery contacts? Of course the switch is important too, I suppose the DNA circuit will not allow the epipe magnetic switch, which are handy for mechanicals.
Great that you have an actual pipe being made for us in here, it would be difficult otherwise. Keep up the good work!