1,500 pts, competitive advice needed

Here a list im looking forwards to run. Somewhat incomplete, looking to make it competitive.

HQ, Succubus, Agoniser, Blast Pistol - 100
Venom, nightshield, Splinter cannon- 75

Elite-
4 Incubi- 88

Troops-
3x 10 Wyches, Hekatrix, Agoniser. Sharnet and Impaler,haywire grenades, Raider, Flicker -690

Fast Attack-
2x 5 Scourges, 2 heat lances, solarite, blast pistol- 318

So far 1271 pts if im not mistaken. What else to add for 1500? Or what to change? Swap incubi for bloodbrides and give another raider instead of venom?

Swap the Scourges for Ravagers, infinitely better at anti tank. With that points left over you could add some blaster born they always make things competitive. Basically the Scourges aren't worth the points your spending. So basically anything else would be better. Except Mandrakes...

[EDIT: Ninja'd!]

I will point out that for the price of those Scourge units, you could afford 3 Ravagers with Flickerfields. That's 9 anti-tank weapons spread on three platforms compared to 6 AT on two platforms that probably have to Deep Strike to get in range.

Fill up your other slots before moving to Fast Attack for AT. IMO, Ravagers, Trueborn, and Warriors in that order do it better than the Fast Attack guys.

As for Bloodbrides, a similar concept applies: fill up your Troops before you touch your Elites. Wyches tarpit heavy infantry almost as well, and Haywire vehicles just as well. Incubi can do smething different- they can kill a unit quickly. More Incubi and an Archon would be nice.

I feel like a competitive Wych list needs Haemonculi. A Succubus, sad to say, is sort of a big Hekatrix, while a Haemonculus makes a Wych unit much harder to casually gun or swarm into submission. It's a chocolate and peanut butter combination.

i personally wouldnt swap the incubi for bloodbrides. They are sexy, but just dont chop up the opponent as effectively as incubi.
i would swap the succu for an archon though.
As said: swap the scourges for ravagers. i would swap them for VRB/RWJ and/or Reavers, but as i stated so many times, its only our meta. So ravagers good. If you want heatlances, i'd go with reavers - insane speed, high survivability, deals damage to unites they pass through, can have heatlance. If you want scourges, i would give them haywire blasters.

But initially, if you want AT, first i would recomend an out-of-our-meta blasterborn. A squad of blasterborn - 4 born, 4 blasters, venom with cannon - costs 173 pts.

The HQ's venom doesnt need a nightshield, for it will be at the front of the battle.

So i would: Archon - agoniser, shadowfield, drugs, pgl - 145
Haem w liquifire - 60
5 Incubi - 110
Raider - FF - 70
2*9wyches1heka - agoniser, shardnet, haywire and a weapon of your choice - 2*170 - 340
2*Raider - ff - 2*70=140
3*ravagers - ff - 3*115=345
2*blasterborn - 2*173=346

1457pts.

Taking the advice to swap the scourges for ravagers, though I might try 2 ravagers and 1 RWJ.
But then should I keep the haywire grenades on the wyches? Because I feel If i keep my wyches with the grenades, and add another team of them (Probably run them in teams of 8 or 9), that there isnt that much need for blaster born.

And that would give me space to add more haemis, around 2. bring the archon with incubi on a raider. and Maybe if i have points left, some small units of wracks for objectives.

I do like your list enfernux, but I have sort of bad luck with my scoring units. And having only two in the field (them being wyches) I doubt it can work for me.