3000 Dark Eldar with 3000 Tau ally for apocalypse game

Dark Elder
Archon, Blast pistol, Huskblade, Ghostplate armour, Combat drugs, Soul-trap,
Clonefield, Webway portal - 195
Haemonculus Ancient, Scissor hand, Dark gate -120
Baron Sathonyx -105
Three Grotesques, Aberration, Scissor hand -130
Six Kabalite trueborn, Four blasters, Two Dark lances - 182
Ten Kabalite warriors, Splinter cannon, Sybarite, Raider, Flickerfield,
Splinter rack, Grisly trophy -195
Ten Kabalite warriors, Splinter cannon, Sybarite, Raider, Flickerfield,
Splinter rack, Grisly trophy -195
Ten Kabalite warriors, Splinter cannon, Sybarite, Raider, Flickerfield,
Splinter rack, Grisly trophy -195
Fifthteen wyches, Three Hydra gauntlets, Hekatrix, Phantasm Grenade
launcher, Agoniser -220
Five wyches, Venom, Splinter cannon -115
Ten wracks, Two liquefier guns, Acothyst, Hexrifle, Raider, Flickerfield,
Grisly trophy, Enhanced athersails -225
Nineteen Hellions, Helliarch, Phantasm grenade launcher, Venom
blade -334
Six reavers, Two cluster caltrops -172
Ravager, Flickerfield, Nightshield, Torment grenade launcher - 130
Talos pain engine, Twin linked liquefier gun -105
Talos pain engine, Chain flails - 110
Razorwing jetfighter, Splinter cannon, Disintegrator cannon, Four
Neurotoxin missles, Flickerfield -175

Total – 2,906
Thats the list I'm running with as it fits thats campaign I was just looking for a few pointers on how to run it with any tips and tactics you could have?

This is my Tau list if you're interested.

Tau
Commander, Cyclic ion blaster, Fusion blaster, Puretide engram chip,
Iridium battlesuit, Stimulant injector, Repulsor impact field,
Two shield drones - 180
Cadre Fireblade -60
Ethereal two shield drones - 74
Twelve fire warriors, Shas’ui, Bonding knife, Devilfish,
Sensor spine, Disruption pod, Automated repair system -247
Twelve fire warriors, Shas’ui, Bonding knife, Devilfish,
Sensor spine, Disruption pod, Automated repair system -247
Twelve fire warriors, Shas’ui, Bonding knife, Devilfish,
Sensor spine, Disruption pod, Automated repair system -247
Twelve fire warriors, Shas’ui, Bonding knife -142
Crisis team, Two Shas’ui with burst cannons and shield generator,
Shas’vre with two flamers and shield generator, Two gun drones -225
Crisis team, Two Shas’ui with Fusion blaster and Plasma rifle,
Shas’vre with two Fusion blaster -156
Stealth team, Shas’vre, Homing beacon -200
Riptide, Twin linked fusion blaster, Ion accelerator, Two missile drones,
Stimulant injector, Velocity tracker - 305
Eight Pathfinders - 88
Four Pathfinders, three rail rifles, Recon drone -127
Twelve marker drones -168
Three Piranhas, Six seeker missiles, Three Fusion blasters,
Sensor spines - 213
Razorshark, Missile pod - 150
Broadside, High yield missile pod, Missile drone, Shield drone -89
Hammerhead, Smart missile system, Ion cannon, Sensor spine,
Automated repair system - 135

Total - 3,054

Thanks
JD