When leaving the hospital...

💜𝑺𝒉𝒆𝒍𝒍𝒚💜 • 💙 Boy mama 💙

I am 37+4 weeks and a FTM. I got a check list of things to pack for the baby but I was wondering if something's are mandatory. Obviously I know the car seat is but what about, socks, mittens, and a beanie??? Can I just bring him home in a onsie??? It gets pretty hot here so I don't want to over dress him if I don't have to. I have all the stuff if I have to but is it all necessary?