Just try going up and up until you find something suits you. There is next to no DE in silver.
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Gold 2 and 1 is decent enough to get king to lvl 10. Crystal 3 is ok but 1,2 are amazing required you manage to hit those base effectively which considering your TH will be sorta hard.
What you can do is push up to crystal and just get dark elixir from the bonus by attacking farming bases.
Might be dangerous but whatever