I have performed the migration of storage on a Windows cluster from one array to another using storage replication but this was for the purpose of capacity management when our arrays were on v1.4 OS.
Probably the biggest determining factor that might affect the move for you is, is there any subnet changes, in particular for the cluster and cluster groups? If there needs to be no IP changes for your move then it should be as simple as you describe. You will want to disconnect all iscsi sessions on the node you are moving first. It will just sit there until you offline the cluster resources, handover and reconnect the iscsi sessions.
If there needs to be cluster IP changes then it might still be doable but will probably be more complex!