Zulu & Google Read only Work Flow recommendation.

Client has events that they mange and each event has a SETUP Date/Time and EVENT Date/Time.

In the solution the SETUP and EVENT all resides in the same record. Should I replicate all the fields needed for each Calendar or should I make some sort of separate table that pushes events to a separate table and then use that to push to google?

Users will only have read access to the calendar as FM is the source of truth. Does the permission of the calendar user need to still have read/write permission even if I have the direction of sync going from Hub to Spoke -->

Is it better to have two configs with one calendar each or one config with two calendars. ( I think there may be a conflict as my setup and event have the same uuid. )

It seems that and end date and time is required and so every setup and event I'll have to compute some end / date time - typically they want to get the item on the calendar and have the end be a TBD usually known days before.