Baby shower gifts!

I had a really great turnout for my shower. I am so blessed! Couple of questions. Would you keep duplicates of outfits if they are one in newborn and one in 0-3? What about size 1 diapers. I got like 9 big packs all size 1. Should I exchange now for size 2 or wait to see how she grows? Just how many receiving blankets should I keep ?what about other duplicates...I got like 5 baby brush sets. Sorry so many questions...ftm and I wasn't prepared for how overwhelming it would be to sort through everything. Just a side note, I'm not selfishly returning for the money or because I'm ungrateful. All of the money i get from returning is going straight to other needs for baby!