The biggest glaring issue I can find in your list right now is the lack of Ravenwing Bodies on the table the 2 bike squads.
The bike squads have the same upgrade on each of them the plasma gun and melta gun. DO NOT mix and match weapons like that on squads, instead put all of the meltas in a squad and all of the plasma in the other. Secondly why are you using plasma guns on normal Ravenwing Bikes use grav instead, same point price and will not kill you. If you are going to use plasma bikes take Black Knights instead.
Now the to compenstate for the lack of bodies I would drop Sammael granted he is great and has a good looking model. But he is absorbing a few too many points you could be using those points for 2 more bike squads or a 5 man black knight squad.
Hope this helps.