I finally bought the daemon codex, so here's a list with them as a detachment to my Noise Marine Army. I'll be fielding this for the second game since my return next weekend so I need all the advice I can get, although this does use pretty much all of my models.

Primary Detachment

HQ

Lord Delmar - 135
Plasma Pistol, Lightning Claw, Mark of Slaanesh, Sigil of Corruption

Sorcerer Eden - 165
Plasma Pistol, Force Sword, Mark of Slaanesh, Sigil of Corruption, Level 3

Troops

Jules' Noise Marines (x6) - 130
6 Sonic Blasters

Vox's Noise Marines (x6) - 179
Champion with Doom Siren, Combi-Melta
4 Sonic Blasters, 1 Blastmaster

Heist's Noise Marines (x6) - 167
Champion with Power Fist
Bolt Pistols, Close Combat Weapons, 1 Blastmaster

Rhino - 50
Dirge Caster, Extra Armour

Elites

Helbrute - 120
Plasma Cannon, Combi-Bolter, Power Fist

Heavy

Predator - 125
Turret Lascannon, Sponson Heavy Bolters

Tong's Havocs (x6) - 170
Champion with Plasma Pistol, Power Axe
2 Plasma Guns, Meltagun, Mark of Slaanesh

Rhino - 50
Dirge Caster, Extra Armour

Auxiliary Detachment

Herald of Slaanesh - 85
Locus of Swiftness, Greater Reward

Daemonettes (x10) - 125
Alluress with Lesser Reward, Rapturous Standard

Total 1502