For cloud chasing enthusiasts using the SMOK G-Priv 4 Kit, the best sub-ohm option would be to use low-resistance coils and a high wattage setting. Sub-ohm tanks or rebuildable atomizers with large airflow and compatible with mesh coils can help maximize cloud production. It's recommended to choose coils with a resistance below 0.5 ohms, as they are designed for higher wattage outputs and can generate dense and voluminous clouds.