I went Gores and Guillaume's socketed with Cham. That frees up your belt slot for Arach for some more FCR which can help you hit the 105 breakpoint.
On switch I went HotO, 35FCR Spirit (gives more mana than dual HotO). Then you just need an FCR ring and you're at 105.
Can't remember what I socketed in Stormhield tbh, if you're softcore it's probably not even necessary. I've seen folks use Beast or even Wizardspike on offhand.
Worth mentioning this was a while ago and on legacy LoD!