First attempt at a Necron army list - 1850 points

Ive got my first game of 40k for quite a few weeks coming up tomorrow. It will also be the debut of my Necron army so here is the list I am thinking of using :

1850pt Necrons 5th ed. Roster (Standard)

Selections:

HQ (730pts)

• Necron Overlord (365pts)
  Ever-Living, Independent Character, Reanimation Protocols
  Warscythe
  • Catacomb Command Barge (80pts)
    Living Metal, Quantum Shielding, Sweep Attack, Symbiotic Repair
    Tesla Cannon
  • Royal Court (185pts)
    • Harbinger of Despair (60pts)
      Ever-Living, Reanimation Protocols
      Abyssal Staff (Shroud of Despair), Veil of Darkness (30pts) (Veil of Darkness)
    • Harbinger of Destruction (55pts)
      Ever-Living, Reanimation Protocols
      Eldritch Lance, Solar Pulse (20pts) (Solar Pulse)
    • Harbinger of Destruction (35pts)
      Ever-Living, Reanimation Protocols
      Eldritch Lance
    • Harbinger of Destruction (35pts)
      Ever-Living, Reanimation Protocols
      Eldritch Lance
• Necron Overlord (365pts)
  Ever-Living, Independent Character, Reanimation Protocols
  Warscythe
  • Catacomb Command Barge (80pts)
    Living Metal, Quantum Shielding, Sweep Attack, Symbiotic Repair
    Gauss Cannon
  • Royal Court (185pts)
    • Harbinger of Despair (60pts)
      Ever-Living, Reanimation Protocols
      Abyssal Staff (Shroud of Despair), Veil of Darkness (30pts) (Veil of Darkness)
    • Harbinger of Destruction (55pts)
      Ever-Living, Reanimation Protocols
      Eldritch Lance, Solar Pulse (20pts) (Solar Pulse)
    • Harbinger of Destruction (35pts)
      Ever-Living, Reanimation Protocols
      Eldritch Lance
    • Harbinger of Destruction (35pts)
      Ever-Living, Reanimation Protocols
      Eldritch Lance

Elites (95pts)

• Deathmarks (95pts)
  • 5x Deathmark (95pts)
    Deep Strike, Ethereal Interception, Hunters from Hyperspace, Reanimation Protocols
    5x Synaptic Disintegrator

Troops (445pts)

• Necron Immortals (85pts)
  Reanimation Protocols
  • 5x Necron Immortal (85pts)
    5x Tesla Carbine
• Necron Warriors (180pts)
  • Ghost Ark (115pts)
    Living Metal, Quantum Shielding, Repair Barge
    2x Gauss Flayer Array
  • 5x Necron Warrior (65pts)
    Reanimation Protocols
    5x Gauss Flayer (Gauss Weapon)
• Necron Warriors (180pts)
  • Ghost Ark (115pts)
    Living Metal, Quantum Shielding, Repair Barge
    2x Gauss Flayer Array
  • 5x Necron Warrior (65pts)
    Reanimation Protocols
    5x Gauss Flayer (Gauss Weapon)

Fast Attack (400pts)

• Canoptek Scarabs (75pts)
  5x Canoptek Scarab Base (75pts) (Entropic Strike, Fearless, Swarms)
• Canoptek Wraiths (205pts)
  Canoptek Wraith (35pts) (Fearless, Phase Attacks, Phase Shifter, Wraithflight), Canoptek Wraith (35pts) (Fearless, Phase Attacks, Phase Shifter, Wraithflight)
  • Canoptek Wraith (45pts)
    Fearless, Phase Attacks, Phase Shifter, Wraithflight
    Whip Coils
  • Canoptek Wraith (45pts)
    Fearless, Phase Attacks, Phase Shifter, Wraithflight
    Whip Coils 
  • Canoptek Wraith (45pts)
    Fearless, Phase Attacks, Phase Shifter, Wraithflight
    Whip Coils
• Necron Destroyers (120pts)
  Preferred Enemy (Everything!), Reanimation Protocols
  • 2x Heavy Destroyer (120pts)
    2x Heavy Gauss Cannon

Heavy Support (180pts)

• Annihilation Barge (90pts)
  Living Metal, Quantum Shielding
  Tesla Cannon, Twin-Linked Tesla Destructor
• Annihilation Barge (90pts)
  Living Metal, Quantum Shielding
  Gauss Cannon, Twin-Linked Tesla Destructor