I can't really answer your questions, Nate, but I can supply you with some Necron lists from our previous events...
Alex Fennell's 1750pt Necrons - Alex recently finished 3rd or 4th at Adepticon playing Necrons. I am not sure if this is similar to his 1850 point list or not.
Looks like I have Alex's 1850pt list too...And here is one of Ben Mohlie's Necron lists. I hear he's pretty good too.
Overlord: warscythe, mindshackle scarabs, sempiturnal weave, phase shifter 175
Command Barge: 80
Overlord: warscythe, mindshackle scarabs, sempiturnal weave, phase shifter 175
Command Barge: 80
Cryptek: shroud of darkness, nightmare shroud 70
Cryptek: shroud of darkness, nightmare shroud 70
Cryptek: eldritch lance, solar pulse 55
Cryptek: eldritch lance, solar pulse 55
Triarch Stalker: heat ray 150
9 Immortals: tesla 153
9 Immortals: tesla 153
5 Immortals: tesla 85
5 Immortals: tesla 85
3 Scarabs: 45
3 Scarabs: 45
3 Scarabs: 45
3 Tomb Spyders 1 gloom prism 165
3 Tomb Spyders 1 repair arm 160
Total: 1846