Your list will be functional, it is definitely on the softer side of things by Slaanesh standards. If you are looking to optimize invaders please see my list below, its fairly cookie cutter competitive (you could swap the mirror for a CP), the main differences are Trait: Glory Hog, this guarantees so many DP (one in each players turn basically). Epicurean is actually a terrible battalion, you only really start to increase damage if your opponent has a 3+ save, you already have rend -1 which does plenty of damage against 4+ saves or worse. You wont need cogs, you are a 2 drop list which means give your opponent 1st turn and they will come to you. Finally flying keepers are funny and terrifying, grab thermal rider.
Allegiance: Slaanesh- Host: Invaders HostMortal Realm: AqshyKeeper of Secrets (360)- General- Sinistrous Hand- Trait: Glory Hog- Artefact: The Rod of Misrule- Spell: Progeny of DamnationKeeper of Secrets (360)- Sinistrous Hand- Artefact: Thermalrider Cloak- Host Option: General (Invaders Host)- Spell: Born of DamnationBladebringer, Herald on Exalted Chariot (220)- Host Option: General (Invaders Host)- Lore of Slaanesh: Born of DamnationBladebringer, Herald on Exalted Chariot (220)- Lore of Slaanesh: Hysterical Frenzy30 x Daemonettes (300)20 x Daemonettes (220)5 x Hellstriders with Claw-spears (100)Supreme Sybarites (120)Wheels of Excruciation (40)Mesmerising Mirror (60)Total: 2000 / 2000Extra Command Points: 1Allies: 0 / 400Wounds: 108