That's a ton of talent, but the fit is fairly dubious, and the West is so absurdly stacked that a Conference Finals appearance would feel like a major overachievement.
This will be a big test for Melo - he has great players around him for the first time in a long time. If he keeps trying to play hero ball it's going to implode. If he can change his game to be primarily a spot-up and single dribble shooter, help move the ball, find spots to attack the boards and make at least a mediocre defensive effort, the team...will probably still lose in the 2nd round. MAN the West is stacked.