Where would you put nursery?

Lauren • 🌈 Girl born 6/17/2020, Boy 2/22/2022

We have a 4 bed house, kinda large yet none of the rooms seem like ideal options and I feel frozen in terms of making preparations. First pregnancy for me.

Master is downstairs, with room for nursery nook. There’s an Office downstairs (built in furniture takes up a lot of room) next to master bed. There’s a guest bedroom upstairs (with own bathroom) that doesn’t get used much, but I think when I have the baby...that might change as my parents would visit More. There’s my husbands office upstairs which is a bedroom but then the kid must share bathroom with part time 12 year old stepson.

I don’t even know which room to start with. Do I get rid of my rarely used guest bedroom as the nursery? Or do I put the baby next to my stepson and make him share a bathroom? Or keep the baby downstairs and when does it get it’s own room? Which sounds ideal to you?