We are in the same position and my 5 year old ds has been sharing with his wee sis. They absolutely love it! It won't be forever but it works for now xxWe have a 3 bedroomed house so 2 would have to share for the foreseeable future but I don't think it'll be a problem.
We tried for baby no. 2 soon after my cycles returned 80% due to pregnancy jealousy...lol