Doing combined arms, so far I've settled on what my Solar Aux legiones word bearers are gonna take

ALLIED DETACHMENT: LEGIONES AUXILIA ULTIMA PATTERN COHORT (Total = 430pts)
>Line Command Section (5 Models, Command Vox) = 75pts
>* Prime Advantage: Logistical Benefit
>Armoured Command Section (vanquisher cannon, lascannon, dozer blade) = 175pts
>Aethon Heavy Sentinel Squadron (2 Models, Lascannon x2, Hunter Killer Missiles x2) = 180pts
AUXILIARY DETACHMENT: INFANTRY TERCIO (Total = 365pts)
>Lasrifle Section (20 Models, Power Fist, Needle Pistol, Vexilla, Vox, Blast Chargers x19, Bayonet x19) = 90pts
>* Prime Advantage: Master Sergeant
>Hermes Light Sentinel Squadron (2 Models, Multi-Las x2) = 32pts
>Dracosan Armoured Transport (Demolisher Cannon, Dozer Blade) = 180pts
AUXILIARY DETACHMENT: INFANTRY TERCIO (Total = 365pts)
>Lasrifle Section (20 Models, Power Fist, Needle Pistol, Vexilla, Vox, Blast Chargers x19, Bayonet x19) = 90pts
>* Prime Advantage: Master Sergeant
>Hermes Light Sentinel Squadron (2 Models, Multi-Las x2) = 32pts
>Dracosan Armoured Transport (Demolisher Cannon, Dozer Blade) = 180pts
AUXILIARY DETACHMENT: ARMOUR TERCIO (Total = 330pts)
>Leman Russ Strike Tank (2 Models, vanquisher cannon x2, lascannon x2, dozer blade x2 = 330pts

What should I be packing for my Word Bearers to complement their SA friends? I was thinking of leaning into the Saturnine Termi stuff since it seems WB's kind of like it based on that fancy unit they're getting and I could probably do with some 2+ save killers, but with only 1500pts it seems like the body count would be low, and it does seem like WB's wanna just spam the shit out of line cause of their Apex Detachment so should I try and just drown everything in bodies and bolter fire? I definitely know I want to take an Overseer to join the line command section at the least