Who and which to zeta first.

Foxer

I run nightsisters mainly but building my nightmare(ish) team. Who to zeta first?
ZSion
ZNihlas
Vader
Palp
(Fill in the black I have lots that work)

Vader and Palp have no zetas yet what order should I do them???

End goal will be a Triumvant with palp/Vader

Thanks,

Ryche

EP Lead