Anti tank at 800pts

I'm mulling over what to bring for a doubles event. I want to bring more anti tank, but I'm a little unsure what to cut to find space for it. We have a very marine-dominated meta so dissies seem essential. Here's what I've concocted so far:

Kabal of the Flayed Skull Battalion

Archon
Agoniser, Splinter Pistol, The Helm of Spite, Warlord, Hatred Eternal.

Archon
Venom Blade, Splinter Pistol

Kabalites (5)
Kabalites (5)
Kabalites (5)

Venom with 2 Splinter Cannons
Venom with 2 Splinter Cannons
Venom with 2 Splinter Cannons
Venom with 2 Splinter Cannons

Ravager with 3 Disintegrators, Phantasm Grenade Launcher & Shock Prow

Razorwing Jetfighter with 2 Disintegrators & Twin Splinter Rifle

My White Scars ally is eying up a list consisting of a captain, an apothecary, two units of tactical marines with a plasma gun, two twin lascannon razorbacks, and some scouts with sniper rifles.

I'd really like to retain a list with plenty of vehicles as I think this plays to our strengths at low points levels. Still, any thoughts on how I could squeeze in some Darklight?

Why not drop the 4 venoms for two raiders? Run them Dark Lances, and use the extra points left over to add blasters to your archon and warriors.

Buff up your second Archon a tad with a hustblade, and throw some other upgrades about...

Alternatively, you can keep the squads all the same, and add in a second ravager.

Either way, you have 300 points of your 800 tied up in Venoms. Drop those and your Raiders will more than cover for this size of game

I agree with faithrun, if you want more anti tank drop the/some venoms in favour of raider(s). This will save you points and give you some extra anti tank.

You might wish to drop only 2 venoms for 1 raider and blasters. (I think this might be your best bet without changing the way your list works much, I would also not leave the archons alone in a venom who if it dies has a chance to kill an archon)
Drop 3 venoms for 2 raiders and an extra squad/court and some blasters/shredders.
Drop 4 venoms for 2 raiders and get something more expensive (this will drastically change how your list feels. It will eat into a lot of your anti infantry, so the extra unit might be something with dissies/shredders to ad some more anti infantry again).

Thanks for the input. From what you've both suggested, I'm now considering:

a) Dropping a single Splinter Cannon from one Venom, dropping another Venom entirely, and adding a Dark Lance Raider.

b) Dropping two Venoms, and adding a Dark Lance Raider, adding three blasters to my Kabalites, and swapping the Twin Splinter Rifle on the Razorwing to a Splinter Cannon, and spending the last few points on Raider upgrades.

c) Dropping two Venoms, and adding a Dark Lance Raider, adding one-three blasters to my Kabalites, and adding one or two Sslyth.

One issue is that I only have access to a single Raider and a single Ravager for this particular event :/ I do have haywire scourges but they're so specific that they seem like a gamble at such a low points game.

Edit: I'm now fairly sure I'll lock in option c), removing two Venoms, and adding a Dark Lance Raider, two Blasters, an extra Kabalite and one Sslyth. I really didn't want to drop the Venom spam but showing up without at least some anti tank seems like a terrible idea if we pair off against mechanised lists.