Assalamo Alaikum,
It is sufficient for a person to complete the fard aspects of ghusl in order to attain ritual purity and free oneself from the obligation of ritual bathing.
However, one should try his or her best in order to adhere to the Sunnah as much as possible. Surely one can only attain benefits and blessings in both this World and the hereafter through following the Messenger of Allah (saw).

There can be no better example to lead us towards success and no greater means through which to attain Allah’s pleasure.
Allah knows best.
[Answer provided by: Mawlana Kutub Akuji]