Sorry to be nitpicking, but if I'm not mistaken any metal items are safe in the air temple (as opposed to the BDC, where only higher metal is safe IIRC). Not that it matters a lot most of the time, but still nice to know if you're good with crossbows or wielding an orcish spear of devastation, or if you happen to have bracers of regeneration.
Anyway, back on topic: Boots of the Divine Messenger grant -death, too. So if you wear that and the AMW, you have double resistance, which is plenty.
Since you are a monk, the mana temple will be relatively easy. Use your special "switch with hostiles" power to get to the archmage. Ignore the rest of the crowd and try to avoid annihilators as much as you can.
Your potion of Cure Corruption is a great weapon against the Archmage, too. It will weaken him a lot if you throw it at him, especially if the potion is blessed. It will also mean his melee attacks no longer corrupt you. I'd say this is a good use for your potion, especially when you have 10 SoCR.
For the wish, I would still be inclined to spend it on potions of longevity and bless and drink them. On the other hand, I see you do have a cloak of invisibility and no type of ghost can see invisible. As Jellyslayer said, GoGS is tempting, too. Just make sure not to lose it on a trap while doing the mana temple.