After a good soaking of rain I used the human powered roller and noticed that the limestone settled even more from just four passes. The back of my yard to the East has a very slight downhill grade. I decided that my shed base would follow this contour allowing rain gutters to drain the same direction as the surrounding ground. An extra two feet of gravel on each side of the shed will aid in runoff if I decide not to use rain gutters and spouts.
The weather this afternoon was bright and sunny but cool. 56 F / 13 C is nearly a 50 degree difference in temperature from the start of my shed project. I have to find my hat.