Katy at Rebel Roc teaches just the 3 moves in intermediates, which I have to say I prefer.
As Philsmove mentioned, repeating a move from the previous week would be good as a refresher (possibly to start the set?), together with perhaps one 'core intermediate' move (not covered enough in many venues IMO), and one of a more challening nature.
That should provide something for all levels, and a bit of time for styling/safety etc as well
.