2 is the best shooter, 5 the best post player (switch sides depending on his best move).
2
4 screens for 3 to catch the ball near the top of the key (if 3 is denied, 4 may need to step out for the pass). The first look is for 2 coming off the screen.
3
The elbow double screen creates weakside movement and deters double teams as well as making it easier to pass into the post.
4
If a second defender helps on 5 he can find an open shooter on the perimeter or find the other post player on the opposite block.