Lord of Slaanesh- Valdrak Carthis
W/ Blade of Blood, Pendant of Slaanesh, Talisman of Protection, Shield, Chaos Armour, Chaos Steed for 332 Points

Sorceror of Slaanesh- Skeldash
W/ 2 Dispel Scrolls for 150 points

Ex. Champ of Slaanesh- Rolthgur
W/ Sword of Striking, Enchanted Shield, Chaos Armour for 160 points

5 Chosen Knights of Slaanesh (Acc. Lord)
W/ Shield, Chaos Armour, Full COmmand for 295 points

15 Chosen Warriors of Chaos (Acc. Ex Champ)
W/ Shields, Chaos Armour, Full COmmand for 365 points

6 Marauder Horsemen
W/ Throwing Axes, Musician for 108 points

8 Warhounds of Chaos for 48 points

2 Chaos Chariots of Slaanesh for 260 points

9 Chaos Furies for 135 points

2 Fiends of Slaanesh for 150 points.

Basically the plan is to deploy the warriors in the middle to hold the centre (Which I'm reasonably confident they can, especially considering the added punch the Ex. Champ provides). They will be flanked on one side by a chariot, a spawn, the chaos knights and the hounds (who'll be screening the knights). On the other side will be another chariot and another spawn, the furies and the marauder horsemen. The furies will hunt War Machines, pesky sorcerors and disrupt fire from Thunderers, Handgunners, Jezzails and the like. The marauder horsemen are designed to cause some light casualties from their axes and to break the enemy line where possible. The Spawns are playing a supporting role, helping out on the flank if needed or giving the warriors a helping hand in the centre.

Thoughts?

I woul drop Rolthgur and add in a marauder unit.

I agree, it is rather small. I say get rid of Rolthgur and one Fury and add a unit of 20 Marauders. I don't think that you can have 2 talismans as well so choose either the Pendant of Slaanesh or the Talisman of Protection.