As there is no indication as to what the copy profile you want to use, I would consider that you need the complete data as you also mentioned 1 TB of database size for the production system.
If you think you will be able to copy the production data to the test system within 2 days then good luck. I am not wrong. I just gave you my experience. You should then consider raising threads with more details if you expect better replies.
Good Luck
RB