I need guidance with new download

so i downloaded the 3205 version witch was almost 40 Gb, and i wanted to know if i could delete the 3078 version, since with having to download the retail, and then the 3078, and then the 3205 its up to 110Gb right now. Do I delete Version 3078? idk what to do without messing anything up.

 

DO NOT DELETE OR OVERWRITE ANYTHING yet
the pre-download is just updated files, keep them until the update day,
once the update hits the servers (and is downloadable thru launcher)
ONLY THEN copy and overwrite files in your game directory

aka in 7-10 days when the update comes you will coppy and overwrite all files in the game directory with the files you have downloaded ... this way you will not have to solve the usual update issues (connection issues, updating issues, download speed issues, patching files issues....) and most likely you will be able to start playing sooner than people who have problems with the launcher downloading/patching