My last game of anything for the next few weeks tomorrow night and its going to be a big one (for me anyway) at 2500pts.  Having seen what SM can take at 2500pts I'm a little bit worried as my collection is limited so 2500pts is basically everything I have.  This is what I've come up with

Crimson Slaughter Formation
Brethern of Dark Covenant
Dark Apostle
w. Bolt Pistol, Gift of Mutation, Mark of Tzeentch, Power Maul, Sigil of Corruption
10 x CSM
w. Icon Vengeance, Melta, Melta, Gift Mutation, Power Maul, Rhino, Dirge Caster, Havoc Launcher
10 x CSM
w. Icon Vengeance, Melta, Melta, Gift Mutation, Power Maul, Rhino, Dirge Caster, Havoc Launcher
5 x Possessed
w. Mark of Tzeentch, Gift of Mutation, Rhino, Dirge Caster, Havoc Launcher

The Dark Apostle basically gives the formation FNP and Zealot, and the Icons ensure that everyone is Fearless so thats probably wasted points but helps I guess?

Khorne Daemonkin CAD
Wrath of Khorne Bloodthirster
3 x Bloodcrushers
8 x Bloodletters
8 x Bloodletters
Skull Cannon

Chaos Space Marine CAD
Lord
w. Mark of Khorne, Juggarnaut, Sigil of Corruption, Axe of Blind Fury, Gift of Mutation, VoLW
10 x Cultists
10 x Cultists
3 x Mark of Nurgle Obliterators
3 x Mark of Nurgle Obliterators
2 x Mark of Nurgle Obliterators

Should be fun...