Hello and welcome to you and Gracie! I'm a relative newbie, but my advice would be to have everything ready, food, toys, etc. I assume you will be bringing her cage with her, which is good if it is in good shape. One familiar thing for her at least. Read up on the threads on grey body language. Give Gracie plenty of time to get used to you and her new environment. Let her set the pace with interaction. Remember that the first few days are known as the "honeymoon" period, so don't be upset if she seems to regress after that. It is normal as she adjusts.
I'm so excited for you! Post some pics when you get a chance and keep us posted on your progress