I think your list is going to get shot to pieces. All your opponent must do to win is take down your transports and then stay out of template range.
Since 6th edition has come out I have shelved my MCs and my wracks in favor of warriors and ravagers. You're lacking on anti-tank and anti-infantry firepower in favor of wracks with LGs. Our vehicles get blown up very quickly followed by our units getting shot up. I would drop the wracks in favor of warriors/wyches.
Haemonculus ancient w/power maul/shatters hard/liquefier gun/:115
This is a very weak HQ choice with very little survivability in close combat. I also think a shattershard and a LG are rather redundant. I would drop him to a base haemonculus with a LG and take a HQ with a little more oomph. Urien is a possibility if you want to stay coven. His ability to hand out free pain tokens at the beginning of the game is very handy.
2x4 trueborn w/4 blasters/raider/night shield/:356
Why not put them in venom's with an extra splinter cannon? You get an excellent gunboat able to put out anti infantry & tank firepower.
3x5 wracks w/liquefier gun/venom/sc/:375
2x10 wracks w/acothyst/ venom blade/2 liquifier guns/raider/night shield/:410
9 wracks w/liquifier gun/raider/ night shield/:170
Wrack's only firepower is their LG and their vehicle weapon. I'd keep no more than two squads worth of wracks and replace the rest with warriors in raiders. Once wrack's on are foot they are basically sitting ducks. Bolter fire will rip you to pieces and FNP only goes so far.
Talos w/tl liquifier gun/:105
I love this model but with an invulnerable save it doesn't perform. Take a ravager instead. You'll get more bang for your buck.