I need help setting up for my friend's first game !

So we're discussing for me to teach him 40k through tabletop simulator since we're not in the same country.

I thought a small 1000pts game with simple detachments would be ideal

He wants to play Votann so I cooked him this list :

I would gladly follow your advices since I'm not a votann player

Some of the choices I made is to counter my list

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+ FACTION KEYWORD: Xenos - Leagues of Votann

+ DETACHMENT: Needgaârd Oathband (Martial Leverage)

+ FORCE DISPOSITION: Purge the Foe

+ TOTAL ARMY POINTS: 990pts

+

+ WARLORD: Char1: Berehk Stornbröw

+ ENHANCEMENT: Ancestral Crest (on Char3: Brôkhyr Iron-master - Brôkhyr Iron-master)

+ NUMBER OF UNITS: 7

+ SECONDARY: - Bring It Down: (1x4) - Assassination: 3 Characters

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Char1: 1x Berehk Stornbröw (95 pts): Warlord, Kromlôk's Revenge, Warforge gauntlets

Char3: 5x Brôkhyr Iron-master (90 pts)

• 3x E-COG

1 with Autoch-pattern bolt pistol, Close combat weapon

1 with Plasma torch

1 with Manipulator arms

• 1x Brôkhyr Iron-master: Graviton hammer, Graviton rifle

Enhancement: Ancestral Crest (+15 pts)

• 1x Ironkyn Assistant: Close combat weapon, Las-beam cutter

Char2: 1x Buri Aegnirssen (95 pts): Autoch-pattern bolt pistol, Bane

10x Hearthkyn Warriors (100 pts)

• 9x Hearthkyn Warrior

7 with Autoch-pattern bolt pistol, Close combat weapon, Ion blaster

1 with Autoch-pattern bolt pistol, Close combat weapon, L7 missile launcher

1 with Autoch-pattern bolt pistol, Close combat weapon, Magna-rail rifle

• 1x Theyn: Weavefield crest, Autoch-pattern bolt pistol, Close combat weapon, Theyn's melee weapon, Theyn's pistol

6x Brôkhyr Thunderkyn (160 pts): 6 with Close combat weapon, Graviton blast cannon

10x Cthonian Beserks (200 pts)

6 with Concussion maul

2 with Subterranean Explosives, Mole grenade launcher, Concussion maul

2 with Twin concussion gauntlets

1x Hekaton Land Fortress (250 pts): Pan spectral scanner, Armoured wheels, MATR autocannon, Heavy magna-rail cannon, 2x Twin bolt cannon

I choose to try Tyranids (never played it) so I wouldn't be too destructive with my usual Mechanicus

Here's the list, is it too strong ? Should I change the carni with a less brutal setup ?

Ps: I just choose my favourite models + a biovore for scoring

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+ FACTION KEYWORD: Xenos - Tyranids

+ DETACHMENT: Crusher Stampede (Enraged Behemoths)

+ FORCE DISPOSITION: Purge the Foe

+ TOTAL ARMY POINTS: 1000pts

+

+ WARLORD: Char1: Old One Eye

+ ENHANCEMENT:

+ NUMBER OF UNITS: 8

+ SECONDARY: - Bring It Down: (3x2) + (2x4) - Assassination: 3 Characters

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Char1: 1x Old One Eye (140 pts): Warlord, Old One Eye’s claws and talons

Char3: 1x Parasite of Mortrex (70 pts): Barbed ovipositor, Clawed limbs

Char2: 1x The Red Terror (130 pts): Gaping maw, Scything talons

1x Biovores (60 pts): Chitin-barbed limbs, Spore mine launcher

2x Carnifexes (180 pts): 2 with Chitinous claws and teeth, Bio-plasma, Spine banks, Carnifex crushing claws, Heavy venom cannon

1x Norn Emissary (250 pts): Monstrous rending claws, Monstrous scything talons, Psychic tendril

1x Ripper Swarms (30 pts): Chitinous claws and teeth, Spinemaw

1x Trygon (140 pts): Bio-electric pulse, Trygon scything talons