Help making a couple of undead (VC) armies

[manrogue]

So i have been assembling my undead stuff from mantic and i am looking at making a small 500 point army to learn the game and then a 1000 point army once i have got to grips with the mechanics.

i have the following to choose from-
1 Necromancer, 1 Skeleton Horde (40), 1 Revenant Regiment (20), 2 x Zombie Regiments (60), 1 Ghouls Regiment (20), 1 Revenant Knight Regiment (10), 1 Wraith Troop (5) 1 Balefire Catapult with crew, 1 Vampire.

I also have the Vampire counts book to work from, which i believe is the only relevant army book i can use?

Any help and advice would be greatly appreciated!