My game is downloading a 105.45 GB file size but the store the game as 108.2 GB file size. I just want to make sure I am not missing anything if I let this content download or if I have to start over?

The deluxe edition content is 2.8 GB, but that is downloaded separately, although it does account for the exact discrepancy.

Just relaunched Galaxy and the file size moved up to 108.2 without having to restart the download. Vlaakith blesses me this day.