u/RawGambit

Hello everyone

As the title says I seek the advice of the masses to make a list with the best chances against a Blades of Khorne player who will be bringing Skarbrand and a Bloodthirster. He is the person who introduced me to Warhammer and had a Meltdown about Lady Olynder when I played her for the first time against him. He recently mocked her, and thus I need to make sure I win against him. There'll also be a SoB player, but I mostly care about winning against the Khorne guy.
Alas I do not play often enough to have a good feel for list building, I also haven't been able to play any real good games of 2K as Spearhead has been the default game at my LGS

At my disposal I have the following units, any advice is very welcome and appreciated

Lady Olynder (who is, ofcourse, non-negotiable for the list)
Awlrach the Drowner
Reikenor the Grimhailer
Kurdoss Valentian
Black Coach
Nighthaunt Endless Spells
Nighthaunt Faction Terrain: Nexus of Grief

Gatebreaker Mega-Gargant
Cogfort

Lord Vitriolic
Scriptor Mortis
Krulghast Cruciator
2x Guardian of Souls
3x Spirit Torment
2x Chainghasts
1x Knight of Shrouds
2x Knight of Shrouds on Horse

2-3 units of Grimghast Reapers
3-4 units Chainrasps
20-30 Bladegheists Revenants
3 units of Dreadblade Harrows
1 unit of Myrmourn Banshees
1 time the Headsmen Curse warband
2 units of Craventhrone Guard
1 unit of Pyregheists
1 unit of Dreadscythe Harridans
2 units of Spirit Hosts

So I recently got a few Sisters' boxes and want to prep an army for a demo/1000pts campaign my local game store is going to organise. I am a new player coming from AoS so I was wondering what the best demo army I could make with the following boxes, I'd preferably have an army that can teach me most of the rules but also functions than more than just 'learn the rules'.
I have:

1x Penitent Crusader Host
1x Combat Patrol (the one without the rhino)
1x Morven Vahl
1x Armageddon Battalion: Adepta Sororitas

I also have my eyes on an Army of Faith box, and I have 5+ shops within driving distance of me that carry Warhammer so I should be able to get additional boxes relatively easily if needed but I'd prefer if I can stay as close to what I already have for now, upgrades are always welcome as we're planning to slowly have the campaign grow in points.

Is this enough to build something workable, or are there things I for sure will need more off to grow/build my army?

Thank you in advance