Elemental mastery is of very little value at this point, given that you already have =Fire. You don't need immunities, really (though the lack of any electrical resistance is problematic, but you should be able to find something or other at the Casino). Even in that case, you'd be better off with blue dragon armor.
Teleport control is a pretty high priority though... it's the easiest and safest way passed the eternal guardian, plus if you're neutral, the mystic can give you the ring of ice and maybe some SoCR, which solves two problems at once.
I also like rings of regeneration for a wish, though it's a little late for it as they usually turn up around Casino as well. Saving for SoCR later isn't a bad idea if things work out and you have nothing better for your wish.
Hoping to win with every class, doomed. Archer, Barbarian, Bard, Beastfighter, Druid, Elementalist, Farmer, Fighter, Monk, and ULE Priest down.