Is it permissible for me to interpret the Qur’an to my female students, while adhering to reliable interpretations such as Al-Sa'di and others, given that I have memorized the Book of Allah with an unbroken chain of transmission (sanad)?

Congratulations on memorizing and teaching the Quran. Tafsir al-Sa'di is one of the best commentaries. Al-Sabuni's tafsir is good, but Sheikh Al-Fawzan has a few reservations about it. Al-Ukbari's book is good for Quranic grammar. It is recommended to benefit from Adwa' al-Bayan by Al-Shinqiti, Al-Tafsir Al-Muyassar, Al-Sahih Al-Masboor, Zubdat Al-Tafasir by Al-Ashqar, Tafsir Ibn Uthaymeen, and Umdat Al-Tafsir by Ahmad Shakir.