I can't remember excatly but recall that the it took around 2 1/2 weeks for a response. I know that I had already been accepted before I even heard about interviews from some other schools. Just make sure to answer any calls from unknown numbers in that period.
Also be sure to have some questions. Many people told me it dowsn't matter what the questions are just ask some but I think that if you are going to choose to invest that much time and money you should probably have some questions you want answers to. I asked about the teaching oppurtunities, continuing education, scholarships, and how to prevent from becoming burned out.
It's good that you already have a favorable impresion of the school. I know some that were concerned due to how new the program is. I wasn't too concerned based on the reputation of their med school and no concerns after I was I visited. I look forward to hearing about your visit.
undergrad GPA- 3.43
graduate GPA- 3.94
last 60- 3.95
PT hours- 1200
Volunteer- 100