Necrons

Here's my 1500 point Necron list - primarily for destroying a friend's Tau, and maybe the occasional force of Cadians. It's my first Necron list, so any helpful advice is appreciated.

HQ
Destroyer Lord (130) with
Warscythe (10)
Veil of Darkness (60)
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200 pts

Lord (100) with
Staff of Light (0)
Resurrection Orb (40)
Phylactery (15)
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155 pts

Elites
10 Immortals
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280 pts

Troops
10 Warriors
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180 pts

10 Warriors
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180 pts

12 Warriors
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216 pts


Fast Attack

4 Destroyers
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200 pts

2 Wraiths
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82 pts

Total : 1493

This list has some holes in it = A unit of 2 wraiths, even with their invulnerable save, are going to be smashed apart if the Tau concentrate on them; and I really don't have any weapons capable of destroying vehicles besides the Warscythe. I was hoping to include a unit of heavy destroyers, but I wasn't sure of what to drop to make room for them. My basic strategy is to have my warriors advance on one flank with the resurrecting lord whose goal is to bring back any dead warriors, while the Immortals come down the other flank and destroy fire warriors whilst advancing. The job of the wraiths is to 1) Draw fire at first so the warriors can get closer and 2) If they make it to the tau lines, snip away his flanks, preferably tie up his battlesuits in cc. The destroyer lord and 4 destroyers will Deepstrike, and since they cannot move the first turn after deepstriking, the destroyesr will blow the living crap out of the back of his lines. After that the destroyers will continue on their merry way, blasting fire warriors, whilst the Lord moves into cc with the closest Suit or HQ he can find, and smash it asunder with his awesome power. I tried to go pretty Necron heavy to avoid a phase out, and I think that has been achieved- all Necron models with a grand total of 50 necron models - they have to shoot me down the 12 to phase me out! So please, tell me what is wrong (if anything) with my list, and how I can fix it!