2BR on Columbus Day weekend?

[goofy4wdw2]

What do you think the chances are of us getting a 2BR (SSR) the night of 10/13...Sunday into Columbus Day? Our flight home is on 10/14 but we only have a room through 10/13. Deciding how long we should wait for the waitlist vs switching our flight to 10/13. We could also switch our points to stay in 2 rooms at Coronado which I'd love to see, just not sure if it's worth it to switch on our last night. Any thoughts would be greatly appreciated! Thanks!