Battlefield 3 Origin install download

Hi, I usually download a pirated version (I know I shouldn’t) to test out a game and see if it is worthy of purchase, so I downloaded battlefield 3. It was a great game, so I bought it off origin (see, I still supported the game). Only problem is that it is 14.9 GIGABYTES. So how can I use my cracked version installer disks for it instead of waiting 3 months for the download to finish?