I'll go with Alex. Ben has punched enough people already.
Also, put Louisa down for lunch with pigeons on the 17th because she also got pooped on by a pigeon and it amuses me to think of pigeons targeting Louisa.
In terms of the danceathon, I'm assuming Tee is too heavily pregnant to be allowed to be on her feet for that long. Dean would happily compete with any of his female friends if there is someone who wants to do it but doesn't have a partner. Louisa isn't much of a dancer and Barney is going to mope.
George can find Susan on the 21st to give him something serious to do for a change.
Dean will go to the vigil on the 25th.
Barney to be imperiused on the 30th with Stebbins. It will be a traumatic bonding activity.