The electric or metal mages could be like Yeomen crossed with Monk Grandmaster in martial arts with some weapons (like staff , dagger, flail, polearms, knife, or other similar weapon like 2-handed sword getting at least skilled and the others to basic.Expert at healing (like ice mage is expert at enchantment and flame mage is expert at divination) with starting eq similar in ac to flame or ice mage but gloves and robe instead of leather armor.
The etheric or air mages would be like rangers/rogues in starting eq and poison resist but expert in flail and bow or dart (maybe firearms too) with flail and/or one item (bow and 2 sets of arrows , +0 darts, or rifle and bullets). staff could be capped to skilled. Starting equipment could be +0 cloak of protection, magic resistance, displacement, or invisibility and maybe 0+ leather gloves. Expert in body spells and maybe skilled in attack so that poison blast could be cast (possibly it would be a "special spell")