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.