Мечтатель
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In Dragon Slayer, I don't think there are any problems with choosing skills. Right at the beginning of the first level, there are huts with sorceresses (4 of them). In them, you get all 4 types of magic.
And in general, you need to develop the Dragon as a wizard to the fullest. In addition to magic of all schools, I also developed:
magic (enchantment/spellcasting - in different translations)
mysticism
wisdom
and one more, I don't remember anymore :)
Regarding logistics, I don't think this skill is so essential for the Dragon. Although, if you think about it, logistics are always useful.