I’d say it would be a bit early for bouncers etc as they’re normally too small for these at the start! I kept my daughters pram up and out and a swing though ! You sound nice and organised 🥰
It doesn't hurt to have it out a little early especially if you have pets or other children so you can teach them boundaries. With my first I put out baby's electric swing early and turned it on to see how my dogs reacted to it. This time I'm putting stuff out to teach my toddler not to climb in baby's safe spots (e.g.: bassinet, bouncer, etc). If you do put things out early though just be ready to wipe everything down again before baby uses it
Whenever you want!!
I was 37 weeks when I went into labor and was scheduled for a c section at 39 weeks I say set it up you really never know
I had everything ready way before 36 weeks. Even with my second. You never know when they’ll come, and you can go into labor before a C-section and they’ll do it when you go in.
Honestly speaking I put everything in place at 38 weeks (pram,cot,room,bouncer etc) because you never know just made sure everything was wiped down again by my partner when baby arrived and Honestly i would do it again as it saves time and energy that u already don't have when baby arrives.