Assassin (arial, felar or human)
Shapeshifter (gnome, human or felar. Gnome is most powerful
and therefore recommended. Felar cannot take water and air
foci)
Warrior (e.g. arial sword, felar spear/hand, swirf axe, giant
polearm)
Bard
Orderly Good Conjurer (human, half, elf)
Ranger (stays in wilderness, forest is probably best pick for
home terrain)

Of the mage classes you selected, necromancer, transmuter and
neutral/evil conjurer are more difficult in my opinion.