Bet you find out in the end Your wood isn't going to stay as dry as some one who juslt laid tin on top of a stack.
Doesn't appear to be much over hang of the tine and every time a strog storm blows up you will get wind driven rain all over your wood.
Al
I agree, he should have made the roof with more overhang. It can be fixed with longer R panels on the roof but he would have to duck under the back side to load and unload. I would have made it taller with more overhang.