When I'm hunting dark with my 3rd account (TH11 in Champs 3), I never attack a base with less than 6K dark. And I use a pure lix army - edrsgs, loons, rages, freezes.
That account has queen maxed (50), king 37, and quite a lot of building upgrades to go.
At Th10 those are slightly harder to find, but still not impossible, and I still use a pure lix army (usually miners based).