Hi there,
Steps looks good to me and should be no problems. One extra step you might like to include is exporting the share information from the old to new server: https://support.microsoft.com/en-sg/help/125996/saving-and-restoring-existing-windows-shares
If you have time (and hardware) then perhaps do a test run with another iSCSI volume just so you know what to expect. Other than that make sure you have a good backup (and confirmed recovery) then off you go
Oh, and also decide if you will connect the RDM in Virtual or Physical compatibility mode before you start.
Kind regards,