The Hidden Forest

I searched for some threads on dot stacking, but nothing was within recent times. There was some talk about some classes stuff not stacking. So before i plop down the 300 points, i was wondering if anyone could tell me how the necro dots stack up and stack on eachother?

right now the necro seems to be able to stack these 3 fine: dread pyre, curse of undeath rk i, desolate pyre rk i.

thanks.

Cobra venom rk
Dread Pyre
Chaotic funeral
Desolate pyre rk
Lure of fiery death
grip of vallon
death stalker
curse of the undeath rk

As far as I know, you can have fun twisting with all that