It is highly recommended to check the 2GB RAM limit box if you have 8GB of RAM or less to prevent the installer from crashing.
While generally considered safe within the community, users on r/CrackSupport emphasize the importance of using the official site to avoid malware and suggest disabling antivirus during installation to prevent false positives. Critical Tips for Installation
The repack includes "Online" content (DLCs), but this is primarily for access to newer vehicles and weapons in single-player mode; traditional multiplayer requires a legitimate copy.