The practice of reciting one or more of the short Mufassal Surahs during the Tarawih
A:
As detailed in the Prophetic Sunnah, the Tarawih Prayer is performed as a congregational prayer in the Masjid (mosque) in tranquility and reverence on standing, bowing and prostrating. Moreover, it is a blessed occasion for reciting and listening to the Holy Qur'an. As for what you have mentioned,
the practice of reciting one or more of the short Mufassal Surahs (the last 65-70 chapters of the Qur'an) during the Tarawih prayer has not been reported from the Salaf (righteous predecessors) who are better to follow their guidance. In addition, it is better for us to do what realizes the purpose of such optional prayer as fixed by the Shari`ah (Islamic Law).