Come to the dark side!
Ressers all the way.
On a serious note, I think you managed to pick 2 complex masters for both factions. Some would say that Zoraida doesn't need backup, she can achieve anything on her own. It is worth listening to the aethervox podcast where Rathnard made a rundown on how she works. Basically you have many various options with her so you can assemble your crew for whatever you want to focus on. The Dreamer crew is a nice addition to the collection with her, they have some exchangable models in their crews and the Dreamer plays differently from everyone. So does Z, mind you. Probably a lot of Neverborn experts will give you better run down on this matter though.
Kiraii is something I'm not very good at. Although I am a rezzer player and love all the other masters, Kiraii is just not my playstyle. She is very good though (possibly the most competitive master of the faction) but as opposed to the other masters she is not very resilient. Any of the other masters would compliment her well, although I would pick Seamus for he is a lot less summoning based and better at board control. He is quite a survivor too. If you want to go down the summoning and direct hitting line then McMourning. If you'd rather summon and buff your minions and hit hard with them, then Nicodem (he himself is quite squishy though). Nico is also the 'mentor' of Kiraii, fluff wise, although she never paid much attention to him.