This is a great idea.
I kind of did that with our last one. We moved from a single story home to a two story home. And when she was first born, I had her a cradle upstairs ( for night time) and I got another one real cheap at a thrift store and set it up downstairs. I set up a little nursery in the hall way. It had a changing table,and a cradle. It sure helped to NOT have to walk up them stairs every time she woke up. But remember I had 4 very loud little boys as well. But it worked out great.