Hi there!
As RusselRaZe already pointed out, this mod is compatible with K2. However, I'm not sure how easy or difficult the technology requirements are when using k2.
In the vanilla game, the chests are meant to be easily acquired within the first 20 minutes or so. However, they require iron chests to craft, and this requirement does not take into account technology changes by other mods, so if iron chests aren't available until later in K2 then you may have problems being able to craft the chest in the early game.
Let me know here if you're still having problems, I'm sure me or one of our great community members can help you out!