If I'm Otis Smith I would go after a Power Forward. Specifically, I would go after Joakim Noah, while he is still frowned upon by the Bulls. Noah is a bit dramatic, but he is full of hustle, and he could battle for rebounds on Offense and Defense side. He plays hard defense, and can fly up the court with Dwight. That would give us two very athletic big men, a matchup nightmare. Two very young, very athletic big men who would run wild on the East for the next several years.
This would allow Rashard Lewis to play his natural SF position.
Also, Noah is a fan favorite in Orlando. Many of those fans are people who left the Magic years ago when the team jacked up prices and shrunk the size of the seats. Those fans can be won back with a player they love. Noah won't win everyone back, but he could help win some.