Need advice on 1500 pts tournament list

I have a 1500 pts tournament coming up. Here's the list I'm planning to bring and I would like to get some feedback about it.

HQ :
2 Bare Haemonculus

Elite :
3 X 3 Trueborn with blaster in a Venom with dual splinter cannon

Troops :
3 X 3 Wracks in a Venom with dual splinter cannon
2 X 9 Wyches with Hekatrix (agoniser) in a raider (Haemonculus go here for FNP)

Heavy :
3 X Ravagers

My strategy :
The wracks are here to control objectives and provide cheap venoms.
Ravagers and Trueborn are here for AT duty, the venom clean what ever is out of transport and the Wyches are there to assault stuff too hard to shoot.

What I dislike about the list :
No HWG on the wyches.
No shields of any kind on the raider/ravager.
To solve those problems, I would need to drop something. I can't drop trueborn or ravager... I would have too little AT and dropping a Wrack squad (and its venom) feel like pulling out my own teeth...

You need those shields, at least on the ravagers. I would down the number of Wyches per squad to about 7 which will free you enough to buy those shields. If you do nothing else, do that. Otherwise I would possibly just drop the Wyches entirely and a haemy and go with another 3 wrack squads. The only weakness in that list should be blood angel DoA which practically can't be outshot. Just get some ff in those ravagers!