My list

I run a 700 point army of
1 hellions (sometimes grenades)
3 squads of hellions (cluster caltrops)
Raider
Kabalites
Archon
Scourges with 3 haywire weapons and
2 shard carbines
So pretty small army. As of 7th what should I add. I might have to wait for 8th but I would really like some new models