I cut some ash out of a river bottom last winter. I decided to leave some unspilt to see how long bit would take to dry. It had been standing dead for 2 years but it still tested 30-35% when cut. The rounds range from 3 to 8β. I loaded 2 totes with them today, had to top the second off with some sugar to finish it out. BTW most of the bark is holding tight. Time will tell.
Based on how much wood you have on hand, you will have no problems with it. I've found 2 years with unsplit ash is plenty of time. I'd also be tempted to use it within a year if it were needed.
What a great place you have! Lots of space to work in the Quonset hut too... Not all that uncommon for me to find wood that you think should be dryer, but needs that final time undercover to finish it off...