Although Arc's chaining property makes for some great DPS on poe currency buy trash mobs, don't expect to melt managers quite as quickly with an Arc Witch. Also, although you may do a good bit of tanking on this construct, be aware of clear, one-shot kills from bosses. Generally, if you can prevent it -- avoid it. To handle managers, consider using Bone Offering in the event that you've got it, drop an Orb of Storms to receive your Elemental Overload, then burn the boss with Ball Lightning as quickly as you are able while keeping an eye out for one-shots.
If you've made it into the conclusion Path of Exile game of Path of Exile, you have likely heard of Vault farming. If not, Vault farming is the most consistent way to make money via mapping. This is because Vault drops two divination cards which reward Exalted Orbs. Within this league Vault is unbelievably strong, because it was relocated on the Atlas. Now, you can employ seven sextants to it easily. It was also bumped up two tiers, so it gives more experience, although that probably won't matter.
Adding more IQ means more drops, plain and simple. Greater Rarity does not do a lot for us because we do not care that much about Particular items. We are farming for pure money drops and divination cards, neither of which are affected by rarity.
This is the area where Windripper comes in wiki. Windripper is a bow that grants 15% IQ from frozen enemies. Since we suspend nearly every enemy with Herald of Ice and our crucial hit probability, this is basically a 15% increase in IQ across the board. With IQ farming being the best method to get gold, this is merely one more IQ item that pushes our farming to the next level.