2k Lost and the Damned - Autocannons and Flamers

Here's a cool new Chaos/IG list I'm going to try this weekend:


2,000 points, Chaos Space Marines (single force-org), Guard Allies

HQ
Warpsmith (Mark of Nurgle, Power Axe, Flamer/Melta, Aura of Dark Glory, Burning Brand of Skalathrax, Warlord)

TROOPS
20 Cultists (2 Flamers)
20 Cultists (2 Flamers)
20 Cultists (2 Flamers)

FAST ATTACK
Heldrake (Baleflamer)
Heldrake (Baleflamer)

HEAVY SUPPORT
5 Havocs (4 Autocannons)
5 Havocs (4 Autocannons)
5 Havocs (4 Autocannons, Rhino for the Warpsmith)

ALLIES Imperial Guard

HQ
Primaris Psyker

ELITE
Guardsman Marbo

TROOPS
10 Veterans (Grenadiers, 3 Plasmaguns, Chimera with 2 Heavy Flamers, Dozer Blades)

FAST ATTACK
2 Vendettas (squadroned)

HEAVY SUPPORT
2 Hydra Flakk Tanks (squadroned, Heavy Bolters)

This list clocks in at exactly 2,000 points, and has four scoring units. They may not be very durable, but with the amount of shooting this list has I think they'll be fine. AV14 might give me a headache, but between Marbo's Demo Charge and the Vendetta Lascannons, I should be alright. What are your guys' thoughts about this list? Any suggestions before I field it Saturday?