I don't have anyone that's close to that level, but I'll drop a nugget of info instead.
The Dull Gold Armor is really good in that fight. The male equivalent is Dark Silver. The Dark Silver Shield would be the best shield to use, but you probably figured that out already. The Ring of Magical Dullness would also help protect you from his attacks. 2nd chance is good for the obvious OP reason, but it's also the only thing that can protect you from his Soul Sucker attack.
It best to play defensively. The best way is to stay back to make him do his WoG type attack. While it's charging, charge at him and hit him once or twice. You could also hit him after his dash attack.
Worst case senario is you have to...
use the Poison Trick.
If I had someone near your level then I would help you. I'd love to fight him with another person to see what it's like.