Err... why? Mystic gloves/boots/hat are pointless at that level. I go in with -20ish magic, I'm 69 magic, and I probably splash once every forty casts in: Torag plate, Verac skirt, Neitiznot, God cape, unholy book/rune defender, rune boots, highest RFD gloves, rune arrows/mith+ bolts, glory. Try to prioritize melee defence without letting your magic go under -20-25. You NEED to range or melee Ahrim. If you try to melee him, he drains stats a lot more (not too good), so I'd suggest you get 60+ ranged for him. You can melee Karil pretty easily with a DDS, whip, and a super attack potion - otherwise, just mage him, you'll only splash a bit more.