Definitely don't count your chickens before they hatch...my first shipped eggs were due to hatch yesterday, three came out pretty quickly, three needed help, another needed help and i was watching it, but i got busy setting up the incubation area with my 6-yo grandgirl, when we went back to check it was blowing bubbles, it didn't make it. So out of 20 eggs from two states (AR and TX), i got 7 developed, 6 alive, less than a third.
I just got 6 BLRW eggs, they came in good shape, nicely packed, but four have moving air cells....;~( California is a long way away.
I bought the incubator because i lost all my broodies and roosters to a fox, i grabbed the last seven fertile eggs...they sat for i think 11 days while i tried to find a broody, then ordered the incubator. 6 hatched, one died a day later, no idea why. Just for comparison.