800 pt Biosantic into Imperial fists

Hello,

First time trying out biosantic in 10th, been playing outrider claw pretty much exclusively so far. Thought I should give our most popular detachment a go before 11th rolls in. Not sure what exactly my mates bringing, but he's decided it will be imperial fists. We'll be playing on an incursion sized board(half regular sized) and here's my list:

Behemoth Brethren (800 points)

Genestealer Cults Incursion (1000 points) Biosanctic Broodsurge

CHARACTERS

Biophagus (50 points) • 1x Alchemicus Familiar 1x Autopistol 1x Chemical vials 1x Injector goad

Patriarch (75 points) • Warlord • 1x Patriarch’s claws

BATTLELINE

Acolyte Hybrids with Autopistols (65 points) • 1x Acolyte Leader • 1x Autopistol 1x Leader’s bio-weapons • 4x Acolyte Hybrid • 1x Cult Icon 1x Cult claws and knife 3x Heavy mining tool

Acolyte Hybrids with Hand Flamers (70 points) • 1x Acolyte Leader • 1x Hand flamer 1x Leader’s bio-weapons • 4x Acolyte Hybrid • 4x Cult claws and knife 4x Hand flamer

Neophyte Hybrids (65 points) • 1x Neophyte Leader • 1x Anointed pistol 1x Autopistol 1x Chainsword • 9x Neophyte Hybrid • 9x Autopistol 9x Close combat weapon 1x Cult Icon 1x Flamer 1x Grenade launcher 5x Hybrid firearm 1x Mining laser 1x Seismic cannon

DEDICATED TRANSPORTS

Goliath Truck (85 points) • 1x Armoured hull 1x Demolition charge cache 1x Heavy stubber 1x Twin autocannon

OTHER DATASHEETS

Aberrants (135 points) • 1x Aberrant Hypermorph • 1x Aberrant weapons • 4x Aberrant • 4x Aberrant weapons

Achilles Ridgerunners (95 points) • 1x Armoured hull 1x Heavy mining laser 1x Spotter 1x Twin heavy stubber

Atalan Jackals (85 points) • 4x Atalan Jackal • 2x Atalan power weapon 3x Atalan small arms 2x Close combat weapon 1x Grenade launcher • 1x Atalan Wolfquad • 1x Atalan incinerator 1x Atalan small arms 1x Close combat weapon

Purestrain Genestealers (75 points) • 5x Purestrain Genestealer • 5x Cult claws and talons

Exported with App Version: v1.48.0 (111), Data Version: v750

Should I drop the patriach for a locus or iconward to give the biophagus an enchancement or vice versa? Sadly I don't have a Abominant, been trying to get my hands on since last November, no dice.