There are plenty of points used in choices that are not needed or below par for a tourney...
Don't bother with necrotoxin missiles, the monoscythe work just fine.
The decapitator and mandrakes are the worst choices the the codex
The incubi do not need onslaught, Demi klaives or blood stone
The wyches do nit need PGL, blast pistol and should have shard nets or razor flails instead of the gauntlets. You also only have 2 scoring units...