Gear upgrade suggestions?

[Ishio]

In my sig is my gear. My stats with the gear on are as follows with Bramblecoat:

HP: 728
Mana: 1370
AC: 513

STR: 75
STA: 88
AGI: 107
DEX: 83
WIS: 181
INT: 81
CHA: 70

Resists:
Poison: 20
Magic: 25
Disease: 10
Fire: 25
Cold: 25

What I'm having a hard with is charm killing. I seem to run out of mana way too quickly.

I have about 5k, and various items that I am trying to sell. Can anyone suggest any quests, drops, or items for sale that I should go for to make life a bit more easier?