Ajay Asked: Pokemon Diamond team rate?

This is my team
Infernape:Flamethrower,Fire blast/Flare blitz,Close combat,Hidden power ice
Staraptor:Fly,Close combat,Brave bird,Roost
Dialga:Draco meteor,Blizzard,Last 2 moves not decided
Floatzel:Surf,Crunch,Ice beam,Dig
Azelf: Psychic,U-Turn,Nasty plot,Last move not decided
Roserade: Sunny day,Solarbeam,Synthesis,Petal dance

This is my pokemon diamond team.Please rate the team out of 100 and suggest any changes