FTM clothes help!!

We were blessed to receive handed down baby clothes from 2 of my husbands cousins, one who had twins! Soo.. we literally have enough 0-3 clothes for 3 babies!!! My husband wants to keep it ALL and my sister-in-law's bestie is pregnant, also with a girl, with a surprise baby after being told 15 years ago that she would never be able to have kids so I want to share the love!

How much do I actually need? My drawers are packed full and I have 3 more loads to go through, minimum.

Goggle wasnt much help so please help me mamas! I trust you!

Thank you in advance! Xoxo