The thing is that the situation has become more complicated and the earlier described situation in which one solution would be to tailor the heating elements resistance to a certain value is now only one of the possible uses.
The other use isn't exactly determined yet but it involves using a entirely different kind of atomizer which uses very different coils somewhere around 1Ω or there about.
And as the situation might change further in the future I think it would be best to make the device to be able to be very adjustable.
I got an idea which for sure sounds as further complications(maybe not) but I just thought that given the fact that my µC can change it's clock settings from within a run-time application then maybe it wouldn't be that hard to measure the battery voltage(which I will have to do anyway) and then adjust the clock each 0,1V drop in battery voltage so that the voltage steps keeps at 0,02V more or less.
I at least think that to be a fun idea, I will have to get into programming the µC again to be able to know if that is even plausible because it was a little time ago that I was working with it and all I can remember is loose memories of some capabilities.
It is also possible that I need to stop thinking ahead too much since then I get my self confused and this is after all software problems which can be managed without having to make new circuit boards.
So perhaps I should forget about these things right now and focus on getting the prototype done so that I can finally begin to prove or disprove theories and other questions.
When the prototype is etched I still have possibly quite a lot of hardware things to test and work out, especially considering my limited experience with DC-DC converters.
It is a big adventure that I don't know how it will turn out, failure is a possibility but I would be very surprised if it ended up in total failure.