This topic would be suspended. I've decided to go with original Malifaux models.
New plastic models are on the way, so there's no need to spend time converting and trying to reach that level of quality. And yet they would be quite far away from steampunk genera, as my general idea was to use necron models (scarabs as arachnids and swarms). And that would change that steampunk atmosphere of the game. Making it just another 40k.
So I'll just grab some of those new plastic minis. I'll go with a different faction though.