Word Bearers + Warp Cults - A Calth Themed Army

So I have been thinking about expanding my force into some of the warp cults and I wanted to get some opinions from those who are a little more familiar with running it, or at least theorycrafting it. My plan is to run 2 giant blobs and some artillery to supplement my Word Bearers. Here is my first go at a list. C&C is welcome.

Legiones Astartes: Crusade Army List (Age of Darkness) (2245pts)
Legion Astartes [Traitor, XVII: Word Bearers] 

+ HQ (300pts) +
High Chaplain Erebus (195pts) [Diabolist]
····Master of the Legion [The Dark Brethren]
Legion Centurion (105pts) [Artificer Armour (10pts)]
····Consul (45pts) [Master of Signal (45pts)]

+ Troops (875pts) +

Legion Tactical Squad (255pts) [Dark Channelling (25pts), 9x Legion Tactical Space Marines (90pts), Take an additional Chainsword or Combat Blade (20pts)]
····Legion Rhino Armoured Carrier (40pts) [Dozer Blade (5pts)]
····Legion Tactical Sergeant (20pts) [Artificer Armour (10pts), Power Weapon (10pts)]

Legion Tactical Squad (255pts) [Dark Channelling (25pts), 9x Legion Tactical Space Marines (90pts), Take an additional Chainsword or Combat Blade (20pts)]
····Legion Rhino Armoured Carrier (40pts) [Dozer Blade (5pts)]
····Legion Tactical Sergeant (20pts) [Artificer Armour (10pts), Power Weapon (10pts)]

Legion Tactical Support Squad (365pts) [Legion Sergeant, 9x Legion Space Marines (135pts), Plasma Guns (150pts)]
····Legion Rhino Armoured Carrier (40pts) [Dozer Blade (5pts)]

+ Elites (245pts) +
Gal Vorbak Dark Brethren (245pts) [4x Dark Brethren (120pts), Power Weapon (10pts)]
····Dark Martyr (35pts) [Artificer Armour (10pts), Melta Bombs (5pts), Pair of Lightning Claws (20pts)]

+ Fast Attack (320pts) +
Legion Seeker Squad (320pts) [3x Combi-weapon (30pts), 9x Legion Seeker Space Marines (135pts), Legion Strike Leader]
····Legion Rhino Armoured Carrier (40pts) [Dozer Blade (5pts)]

+ Heavy Support (505pts) +
Legion Sicaran Battle Tank (160pts) [Dozer Blade (5pts), Heavy Bolters (20pts)]
Legion Spartan Assault Tank (345pts) [Armoured Ceramite (20pts), Dozer Blade (5pts), Flare Shield (25pts)]

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++ Imperialis Militia and Cults Army List (Age of Darkness) (755pts) ++

+ HQ (205pts) +
Force Commander (205pts) [Cyber-familiar (10pts), Digital Laser (5pts), Iron Halo (15pts), Mastercraft a single weapon (10pts), Melta Bombs (5pts), Planetary Overlord (20pts), Power Armour (10pts), Power Weapon (10pts)]
····The Muster of Worlds (70pts) [Cult Horde (35pts), Tainted Flesh (35pts)]

+ Troops (220pts) +
Inducted Levy Squad (110pts) [Close Combat Weapons, Custodian, Frag grenades (10pts), 49x Levy Auxiliaries (98pts)]
Inducted Levy Squad (110pts) [Close Combat Weapons, Custodian, Frag grenades (10pts), 49x Levy Auxiliaries (98pts)]

+ Heavy Support (330pts) +
Auxilia Heavy Ordnance Battery (225pts)
····Artillery Carriage Team (75pts) [4x Militia Auxilia Crew (12pts)] [Earthshaker Cannon]
····Artillery Carriage Team (75pts) [4x Militia Auxilia Crew (12pts)] [Earthshaker Cannon]
····Artillery Carriage Team (75pts) [4x Militia Auxilia Crew (12pts)] [Earthshaker Cannon]

Auxilia Heavy Ordnance Battery (105pts)
····Artillery Carriage Team (105pts) [Breacher Shells (5pts), Medusa Siege Guns (25pts), 4x Militia Auxilia Crew (12pts)]

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