1850 Chaos daemons attempt to competetive

[JasparBB]

40K Army: Chaos Daemons

Now that 6th edition have teared down the effectiveness of my former build (Nurge+Khorne) I started to fiddle around again with my most favourite codex of all. And I ended up with a mono tzeentch army. Please comment and give your thoughts how to tune this list to perfection.

Herald of tzeentch
Disc
Bolt
We are legion
Master of sorcery

Herald of tzeentch
Disc
Bolt
We are legion
Master of sorcery

6 flamers
6 flamers

6 pink horrors + bolt
6 pink horrors + bolt
6 pink horrors + bolt
6 pink horrors + bolt
5 pink horrors + bolt
5 pink horrors + bolt

6 screamers
6 screamers

Daemon prince Wings, Mark of Tzeentch and Bolt
Daemon prince Wings, Mark of Tzeentch and Bolt

Plan is to keep my screamers for 2nd wave and the rest i'm not sure about yet.
Heralds will go in the Flamers for playing the wound allocation game

[JasparBB]

after further theory machining i was thinking to add in a unit of fiends somewhere.

Should i take a unit or not and what should i drop for it?