I think its a good idea to store them with the big end up and then turn them a couple of times a day, even before you start incubating. I usually hear to store them around 60. So perhaps the coolest room in your house, in a carton with the big end up and turn them morning and night until you're ready to start incubating? (Note: this info is gleaned from research - not personal experience since I have never been able to incubator my own eggs to this point).
Big end up! Okay--- didn't know that!! If anyone else wants to jump in here and help me-- PLEASE inform me! ha!