Imo, the only luck we have is the luck we make. So I don't believe in things like it's bad luck to have the pram in the house before baby comes, etc. However, if God forbid, baby was still born or anything like that, seeing the pram in the house would probably hurt. So maybe better not to have it there. I took my chances with this when I had dd, but I understand and respect it if some people just don't feel comfortable, whether for superstitious reasons or whatever.
I'm sorry dd is putting everyone to all this trouble though. But it's very kind and understanding of you to do so.
Hope all goes well and baby is healthy and happy!