Meh, ist in a occy would be waste lol. I would rather use a baba with ist. Put a facet in it. supaflip_69 Occy cant be used on a paly. Heart of oak would be a very good choice. But if you cant afford/get a Heart of Oak you can use Wiz it is a very suitable and useful replacement.

For the charm. I would say use some resist all sc or high single resist sc. Im not much of a fan at putting um everywhere. +Combat charm are also the way to go. I would find it more useful to get bonus from socket that i cannot achieve with charm. Like puting jah rune or stuff like that.