Chameleon Skinks grant a bit of much needed variety, and deep strike assassinations. As you are seraphon allegiance you could put in skink...
This is perfect support, hopefully you get a good partner with a list that is complimentary, hopefully Sylvaneth with Kurnoth hunters, as that...
The phoenix is the same points either way, for 40 points throw in a gryph hound, if nothing else your hurricanum and skinks will get free shots....
Liquid green stuff is perfect for boils, gore, and nurgle rot, and gap filling.
My Fiancé just pointed out that it looks like he is wearing a minion hat. Can't unsee it now.