That's the same thing I'm wondering because my husband is tall but i am awfully short. So we shall see :)
Depending oh how much baby weighs depends in his much you'll need. My first was 8.8 lbs and was only in nb for 2 weeks my now second was 6.13lbs and was in newborn for 1 month. I had 5 pants, 2 jackets, 8 PJs, 10 onesies, 4 under onesies 0 socks(I used 0-3 month socks)
I'm tall and my bf is tall so to be honest I didn't get more than ten little clothes in that size
Non start off at 0-3 &3-6 bc newborns clothes don't last long
And my 6 lb baby could not wear 0-3 when he was first born neither could my 8 lb baby 0-3 months were huge on them at first.
Just get a few cheep ones just in case
My son was 7 lbs and I beleive wore them for abo it a month. I bought a ton this time around because I really don't feel like doing laundry constantly. They go through 3 outfits a day.