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Thrift to CQL migration under new Keyspace or Cluster

Hi guys,
We are running one of our Cassandra cluster under 2.0.17 Thrift version and we started the 2.0.17 CQL migration plan through CQLSSTableWriter/sstableloader method.

Simple question, maybe someone worked in similar scenario, is there any problem to do the migration under the same Cassandra instances (nodes) but in different keyspace (ks_thrift to ks_cql) or should we create another 2.0.17 cluster to do this work?
I know that new keyspace will require more host resources but it will be more simple for us, because once the table migrated we will drop it on the old ks_thrift keyspace.