Job interview

I just had an excitingly scary job interview.  I have no idea if I'll get the position, but they considered me enough to interview me, which is the best I've gotten in over a year.  My position would be training elite ski and snowboarders in Vail, Co.  It would be so amazing!  I have always wanted to do this.  But... I would be leaving my home in Lawrence.  I love our little town house.  It's so cozy and we've started our garden, bought a ton of new furniture, put pictures in every single room.  It is starting to become home.  Plus, I have to leave my beautiful niece!  Should I wait to start freaking out after I know if I'm accepted?? 
YIKES!