Nighthaunt models??

I'm loving the look of some of these new nighthaunt models and was trying to think of ways to shoehorn them into my druchari army as 'counts as' models

I've seen some mentioning using the spirit hosts as mandrakes but I'm sure some of the other plastic kits perhaps with some slight conversions would also work.

I've been mostly looking at the spirit host, banshee, cairn wraith, necromancer and Myrmourn Banshees kits.
Any one else have any thoughts on this? Or should I just cave and start a AoS army.

Planning to use the grimghast reapers as my mandrakes, think the covering cloth could be painted as a flayed skin cloak and the rest in the standard mandrake skin theme, black with glow effects