I was thinking the same thing but my concern was that the ones coming on the 30th would be shipped. I'm in Florida and the outdoor temps have been 90+ and I'm not home to pick up eggs. They would be sitting at least 4 hours in the sun on my doorstep.
They came today and it was just what I thought. I picked up from the post office and they had included a cold pack but even the cold pack was warm when I got them. So I set them in a carton next to the incubator for roughly 4 hours and then they went into the bator.
I'm going to try to borrow or buy another incubator to hatch in.
On a side note, I'm a bit disappointed in the "assortment" from My Pet Chicken which was only three different breeds. They sent 14 eggs, 10 small white ones marked "po", 2 large brown eggs marked "slw", one blue and one green both marked "eew". My guess is 10 polish, 2 silver laced wyandottes, and 2 easter eggers.