Dark Eldar - Urien Rakarth - Coven of pain (My Army List)

So after painting Urien it is time to start considering using him in an army.... to be honest ...

a) I do not have much of a clue on Warhammer 40k nor on building an army list
b) I currently only own Urien and another Haemonculus and a squad of scourges and thats it with my Dark Eldars...

So looking forward to some of your input here as well :)

HQ
Urien Rakarth - 190pts

Elites
4 Grotesques - Liquifier Gun, Strength Bonus in Raider w/Night Shield - 240pts

Troops
9 Wracks - Liquifier Gun, Acothyst in Raider w/Night Shield and Disintegrator - 180pts
10 Wracks - 2 Liquifier Guns, Acothyst in Raider w/Night Shield - 200pts
10 Wracks - 2 Liquifier Guns, Acothyst in Raider w/Night Shield - 200pts

Fast Attack
5 Scourges - 2 Haywire Blasters - 130pts
5 Scourges - 2 Haywire Blasters - 130pts

Heavy Support
Ravager - Flicker Field - 115pts
Ravager - Flicker Field - 115pts

Total - 1,500pts

So that's 3 Wrack squads to score objectives, and to take Urien's extra Pain Tokens. Grotesques to guard Urien and benefit from his Strength boost. Ravagers as the much necessary anti-tank, and Scourges to stall vehicles (and possibly destroy). 6 Liquifier Guns combined with almost 30 attacks from each Wrack squad should dispatch of most hordes too.