I would recommend Dragon Tail for all the reagents mention. Its normally where you get blood with a small chance to farm eye since eye only possible after Ning Yuan, where I only manage to get 2 from Dragon Tail before. And fyi, Ning Yuan has a very low chance of dropping Fiend soulshard which you might want to try for too. Early area of Pom' Lai might still get you minion reagents, which lower the chances of you getting those you need.
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First town