Can you change time zone after Cost Accounting go-live?

Hi - I had a client that previously implemented the costing module. I now want to ensure that the Create Cost Accounting Distributions cutoff date uses the business' timezone (US Eastern) instead of the server time zone.

My understanding is that I first need to define the Manage Legal Entity Addresses time zone as US Eastern, then in 'Manage Legal Entity Configurator Profile Options' set the 'XLE_ENABLE_LEGAL_ENTITY_TIMEZONE' profile level to 'Site' and profile value to 'Yes' - this will then allow costing and processes like Distributions to use the Eastern time zone instead of the server time zone.