Maybe a somewhat crazy idea, but it would work if you are flexible. In DVC, 1BR take a lot of points, so they are the last to book. You could book this "last minute" by DVC standards, like 3-4 months out, maybe even shorter. This is when points become distressed and have to get used. If you could get something like $16 points, it might make it competitive. Then, you'd have to match up flights and all of that...
I'd just go AoA suite. It's a stinking adorable room, about $500/night for the summer, so not crazy by Disney standards.
For off property, I would look into the Wyndham Bonnet Creek. People really love this hotel, and the rates have been pretty surprising when I've looked. It has large, timeshare style units with bedrooms and kitchens and such.