getting him to understand

We have a small house. We're figuring out how to make it work with a baby on the way which we can make it work. So currently our bedroom is upstairs it'd make more sense to move in the 1 downstairs bedroom and put the baby upstairs because of our dogs, and that room is next to the kitchen just so the baby can be in a more quite place. Well in the downstairs room now we have it as a guest room. We pretty much need to get rid of that mattress and whatever. And he doesn't want to. He thinks we can put it upstairs in the baby's room. Also I found a crib I love for about 300$ and it's the one with a changing table attached to it and we can change so they can have it until they're 2. He says we shouldn't get that and be reasonable(but I have more than enough money for it right now and I'm only 6 weeks and it's our first). He said it doesn't need to be Facebook picture perfect. But am I wrong for wanting a picture perfect nursery? I feel like having that random mattress there looks trashy and he got it before we were together and a LOT of girls have used it so I just hate that we even have it(I know it's silly but it bothers me) and it's our first baby and since our house is so small as it is I just want to make everything as nice as possible. Including the nursery. And it's my first baby, I always dreamed of creating this cute nursery and he like doesn't care what it looks like. How do I get him to understand I want the "perfect" nursery for myself I don't give two shits about posting it on Facebook like he thinks I do. It's something I'll be in like everyday and I just want it nice and cute. And I don't want this stupid mattress up there when it will never even get used again. He just doesn't understand and I don't feel I'm being unreasonable about it.