From page one, sentences are in kana and kanji. If you haven't memorized hiragana/katakana perfectly, you will drown in the first week. This is a pro for serious learners, but a con for hobbyists.
By following these steps, you can create engaging and educational content based on Minna no Nihongo for the N5 level. Practice makes perfect, so don't hesitate to try out different scenarios and topics!
Do just buy the main textbook.