They will arrive sooner than you think. I was told to have incubator ready and let eggs settle for at least 24 hours before placing in incubator. I have the Little Giant 9300 and the temps and humidity do not match with thermometer and hydrometer inside. Of 21 eggs in the incubator (12 were mail ordered CLB's) one hatched. The Marans were formed with egg sacs as well as one CLB and one Silky. Why they died? I don't know. I tried to increase the humidity in this incubator and it was impossible. I bought the hydrometer at Walmart and just wonder how accurate that is as well. The temp on that says 95 but the bator says 100 as well as another thermometer...just wishing you luck....I had none. Trying again with my hen eggs....still fluctuates a great deal. Guess that's what I get for buying a cheap incubator...
Best of luck...