I don't see Wild Beasts closing out the night at all. I also think they'll probably be in a tent - maybe opening the Mojave.
I also agree that a Beirut and Gotye conflict is a tough sell. They definitely have the very same fans... Though, I'd personally hate to see a Beirut/Thundercat/Real Estate conflict.
I'd switch Girl Talk and The Hives. Doesn't Girl Talk play in the audience anyway?