My piano tuner told me not to get a baby grand, he said that uprights were preferable (I can't remember his exact reasoning but it may have to do with string length).
My best advice right now is to start playing the piano! Regardless of the piano you purchase the important thing is to find a good teacher and get going. I too would love to have a grand and after 30+ years of playing still do not own one. Someday!!! Find a good used, or new if you insist, piano and practice. Someday the grand will come along. But until then you can have many hours of enjoyment as you learn to play. I wish you the best of luck as you begin.