Alright, let's put it this way. What do people Reccomend I use the last 150 pts for in this 1000 pt list?

Necron Overlord (Phaeron, Resurrection Orb, Warscythe) 150 pts
Cryptek Harbinger of Destruction with Solar Pulse 55 pts
C'tan Shard with Writhing Worldscape and Transdimensional Thunderbolt 265 pts
20 Necron Warriors 260 pts
10 Necron Immortals with Tesla Carbines 180 pts
What about 2 Spiders and 3 scarabs?