Yeah, the "ideal" temperature is somewhere around 55 degrees F. But storing them outside of "ideal" conditions does not mean you are doomed to failure. The more you are outside ideal conditions and the longer you store them, the less likely they are to hatch, but there is not a magic temperature where they automatically go bad. At some point if they are too warm, they can start to develop. I think that is where A. T. is coming from. They won't hatch at those temperatures, but they can start to develop some which can mess up your incubation.
I normally store mine at room temperature, which is well into the 70's in the heat of summer, and I usually get pretty good hatches. I usually collect maybe four days before I set the eggs. Would I get better hatches if I stored them more "correctly"? Maybe, but there is not really a lot of room for improvement. By the way, I store mine in the automatic turner on a dresser top. You don't have to turn them if you store them for just a few days, but it does not hurt.
With the length of time you are storing them (and another day won't hurt) and the conditions you describe, you are doing better than most of us. You should be fine.
