wraiths or skorpekhs?

making an awakened dynasty list trying to decide if I should go with 3 wraiths and a technomancer or 3 skorpekhs and a lord here's what I have so far I'm playing mostly into a tank heavy astra militarum player

Necrons Strike Force (2000 points) Awakened Dynasty

CHARACTERS

C’tan Shard of the Nightbringer (305 points) • 1x Gaze of death 1x Scythe of the Nightbringer

C’tan Shard of the Void Dragon (300 points) • 1x Canoptek tail blades 1x Spear of the Void Dragon 1x Voltaic storm

Imotekh the Stormlord (100 points) • Warlord • 1x Gauntlet of Fire 1x Staff of the Destroyer

Orikan the Diviner (80 points) • 1x Staff of Tomorrow

Overlord with Translocation Shroud (85 points) • 1x Overlord’s blade 1x Resurrection Orb

Plasmancer (60 points) • 1x Plasmic lance

Royal Warden (50 points) • 1x Close combat weapon 1x Relic gauss blaster

BATTLELINE

Immortals (150 points) • 10x Immortal • 10x Close combat weapon 10x Tesla carbine

Necron Warriors (200 points) • 20x Necron Warrior • 20x Close combat weapon 20x Gauss reaper

OTHER DATASHEETS

Canoptek Scarab Swarms (40 points) • 3x Canoptek Scarab Swarm • 3x Feeder mandibles

Deathmarks (65 points) • 5x Deathmark • 5x Close combat weapon 5x Synaptic disintegrator

Lychguard (170 points) • 10x Lychguard • 10x Dispersion Shield 10x Hyperphase sword

Tomb Blades (75 points) • 3x Tomb Blade • 3x Close combat weapon 3x Particle beamer 3x Shadowloom

Triarch Stalker (110 points) • 1x Heat ray 1x Stalker’s forelimbs