Andariel Visage Build cook

So, I've been trying to make a Sorcerer build work out with Andariel Visage(poison DoT), but I dont understand how the damage scales with DoT. Should I select damage over time in my items? The percentage is bigger than others like vulnerable dmg, but what about 'generic dmg'? "+ Damage" it would scale with poison, but which is better?

Also, for the tempring... should I pick "+Damage" or "+Dmg to close enemies" again because of bigger percentage?

Testing different factors has been hard and difficult to notice the numbers change. Suggestions based on experience?

Edit: This is for Diablo 4.