Not *entirely* sure on DE points values, but I'd go with:
Archon with Shadowfield and Agonizer
9/10 Wyches with Haywire Grenades in Raider with Dark Lance (9 Wyches if a Raider's Transport Capacity is 10, if it's capacity 12 then go with 10 Wyches)
10 Kabalite Warriors with Dark Lance and Blaster
If you have the points, 3 Reaver Jetbikes with Heat Lance.