I still have nothing set up and am still trying to figure out how to fit a crib and all the other baby stuff in a house that already has 3 adults (my grandma lives with us) and 3 and 1/2 kids ( 2 of my nephews also live with us and a 3rd stays with us half the time). I really have no idea where everything is going to go and have been obsessing about it to the point that I literally was not able to sleep at all last night. Not to mention how I'm going to be able to take care of a new born on top of taking care of my 4 year old that has developmental delays, my 2 sometimes 3 nephews, my grandma and all the household chores and such! This little one was a bit of a surprise for us because I did not plan on having any more kids since we basically already have 3 sons. Of course we are still happy and excited to welcome our newest son to our family but I'm can't help but worry how everything will work.
Re: Freaking out. Sorry it's kind of long
As for the crib, take a deep breath! We used a pack and play for the first 6 months by our bed. There are all sorts of size cribs; if you have a smaller space, look into smaller cribs.
Think minimal - you don't really need a swing, a bouncer, a changing table, an entire room of furniture, a bassinet, a rock and play, an exer-saucer and a walker all at the same time. Possibly consider getting one and as baby grows - sell and get the next step/stage for baby's development.
Take a deep breath - everything is going to be okay
We've got a full house too! My FIL lives in what would've been our nursery, so our room is all set up with a bassinet/play yard that has a detachable changing table. No, it's not a fancy wooden crib, but it's something!
A small bassinet that can go beside your bed and not take up too much space in your bedroom.
A bouncy seat that can be easily transported from room to room since they're pretty compact.
A baby sling so you can just strap the little one around yourself and go about your duties.
I know you must be overwhelmed up to your eyeballs, but you can do it! Enlist the help of the oldest children for small chores like dusting, vacuuming, wiping off tables, picking up after themselves, etc. let them know they're Big Boys now and that's what big boys do