You can choose to download only the English files and skip others.
Most versions of the FitGirl repack include: Sims 3 Fitgirl Repack
The Sims 3 is a 32-bit app and can only use 2GB of RAM by default. Once it You can choose to download only the English
The good news is that the Fitgirl Repack is usually pre-cracked and patched, so you might not need to do anything extra. However, always check the included readme file or a text file for specific instructions or notes. Sims 3 Fitgirl Repack