It ends a few days before our arrival date, as well.
Awful as it sounds, I'm not moving my trip dates. It's on DS's fall break... but I'd be more willing to take him out of school than to lose my ADR's! I've experimented with a late September trip instead of early October, and there's no ability now for anywhere we want to go.
I still REALLY wish Disney would release special offers prior to your 180 day mark.