what to do with 84 points

here is my 1416p list

HQ:
2x Archons
Agonizer
Blaster
riding around in their personal venom

troops:
4x5 kabals
one blaster in each
they all will be in 2 lance raiders

Elites:
2x5 incubi
they will ride in a lance raider as well

Air wing detachment
3x Razorwing JF's
twin splinter rifle
dark lances

what should I put in?

I would spend 30 points to upgrade all my Dark Lance Raiders to Disintegrator Raiders.

I would also spend the 12 points to buy Phantasm Grenade Launchers for all my sergeants. You could afford getting Demiklaives if you were so inclined, as well.

i just thought some court of archon models but they don't get the buff in vehicles
bur are dissies really better than DL's?

You can find a handful of threads on The Dark City where that very question is currently under hot debate.

I think yes.

I honestly think the dissie vs dark lance debate can be summed up to personal preference. While there is math that supports dissies are better than Dark lances in some instances and reverse in others my experience is they are the same as the are way too many variables in the equation of which one is really better to accurately state factually which is better (as intended by gw) but as for your question you could take a third archon built exactly the same as the other two adding pgl to all three and have a mobile 2+ blaster platform to finish off the vehicles your darklances damage as they have a Max of 9 damage and a min of 3 assuming all hit and wound.

The "get away" venom with different license plates than the first venom. (you've got to think these things through)

Honestly, you could downgrade from Battalion to Patrol or to one of the elite/heavy/fast detachments. Troops just don't do a whole lot, and having a double HQ tax is a lot at 1500.

6 Razorwing Flocks.

They're still worth it.

@chippen are you sure?
arent kabalites important units?

I'm not a huge fan. Objective secured is nice but they they don't have a lot of punch.

You're playing them right though if you're gonna play them. 2x5 w/ 2 blasters in a Dissie Raider is the way I run them if I'm gonna run them.