Okay, great I just wanted to confirm that LOCAL_QUORUM will not work with SimpleStrategy. There was somewhat of a debate amongst my devs that said it should work.
You have created keyspace with SimpleStrategy.
If you want to use LOCAL_QUORUM, you should create keyspace (or change existing) with NetworkTopologyStrategy.
I have provided CLI examples on how to do it. If you are creating keyspace from Hector, you have to do same via Java API.