Last year I called at 7 months for a studio during the next to last week of October and could only get Old Key West and only for 2 of the 3 nights I needed. I do believe there were one bedrooms available in the Epcot area when I called but we didn't have the points for that.
I booked 2 studios at SSR for last weekend at F & W in late June and waitlisted BW. I got it a month later. So that was about 4 months out. I called MS a few times a week just to check and got lucky!
I have had really good luck with all my waitlists - OKW GV's and BC/BW studios during FW.
I am adding on 200pts at BC right now - don't think my luck will hold out forever!!