Moving Maybe?

Alright so here is the news. I MAY or MAY NOT be moving across the country within the next 9 months. Now here is my dilemma... My daughters father is here and I'm nervous about telling him we are leaving. Except he only sees her once every two weeks or so. So I'm worried but not extremely. Also I'm worried how my daughter will adjust to everything. Traveling, a new house, new area, the whole 9 yards. My mother says that she will be happy wherever her family is. Which I must agree with because she is a happy child anyways.... well how do I go about the travel? She will be 3 by the time we leave and hasn't gone much longer then 2 hours in the car. This would be a 2 or 3 day trip. I think I need a little advice when it comes to all of that.  Any and all is needed!!!!!