How many cloth diapers should we get?

Steph • 3rd baby due Sept 2🥰
Question!
We are wanting to do disposables at first until baby is big enough for cloth ones (someone suggested this). But I have no idea how many cloth diapers we should get to prepare! I have like 7 or something so far along with 2 washable inserts each. Is this enough? What do you guys think??