Super Shooty 2000 point list

In another thread, I mentioned that I wanted a shooty DE list. Here's what I came up with:

HQ
Duke Sliscus the Serpent

3x Haemonculus w/Hexrifle and Liquifier Gun

Elites
Kabalite Trueborn
4x Trueborn
4x Blaster
Venom
Flickerfield, Splinter Cannon

Troops
3 groups of these Kabalite Warriors

9x Kabalite Warrior
9x Splinter Rifle
Raider
Dark Lance, Nightshield, Splinter Racks

Kabalite Warriors
18x Kabalite Warrior
18x Splinter Rifle
Kabalite Warrior with heavy weapon
Splinter Cannon
Kabalite Warrior with heavy weapon
Splinter Cannon

2 of these groups of Wyches
Venom
Flickerfield, Splinter Cannon
5x Wyches
5x Haywire grenades, 5x Plasma Grenades

Heavy Support
Ravager
Nightshield

Ravager
Nightshield

Voidraven Bomber
Flickerfield, 3x Necrotoxin Missile,

Fortification
Aegis Defense Line
Gun emplacement with quad-gun

My main concern is the viability of the 20 dudes + The Duke sitting behind the quad gun. Basically, the plan is for them to sit back and shoot stuff, the wytches and Blasterborn to either Deep Strike or not depending on terrain (to take out vehicles), while the Ravagers and Voidraven do what they do. The warriors drive around and kill infantry, then hold objectives. My main goal when making this list was to have redundancy for everything. I also tried to keep the infantry being anti-infantry (for pain tokens) and the vehicles being anti-vehicle, which the exception of the wytches and blasterborn.

I got some help from a guy on Reddit, who came up with an alternate list that had Wracks, more trueborn, and less Warriors and Wytches, but I want to have a very shooty list, since I get my fill of close combat from playing Blood Angels.

Thanks for the help.