I took:
Custodian,
4 Protectors,
Emissary,
2 Castellans,
3 Wardens &
Kor'O.
I couldn't afford the second shield on the Emissary.
Necrons
Tomb ship
2 Scythe
Shroud
2 squadrons of escorts
Highlights - 2 squadroned Protectors hulked a Scythe in one round of shooting - they are now vicious to the front. They spent the rest of the game being chased around by the Tomb ship with one eventually being destroyed, the other crippled.
Another locked on Protector crippled a Scythe (despite it being braced).
Lowlight - most of the escorts died in one round of shooting. Ordinance and Necrons don't mix.
The extra speed and manoeuvrability of the Emissary was good, but I think it caused one point of damage the whole game (counting those saved) I would prefer the draft one with 25cm speed and 90 turns, + 1 shield optional. It survived the game unharmed, but afterwards he said that it wasn't worth shooting at, so he ignored it.
Protectors are powerful to the front, but the broadsides are pretty weak to make up for it. As soon as the Necrons got past me I had a lot of trouble doing any damage. 90 degree turns or 25cm speed would be nice, but I doubt we will get that on a sub 200 pt ship - and I wouldn't want to spend more on a 6 HP ship.
Didn't get a chance to try the Castellans as they died too quickly - heroically saving the Protectors from the Tomb ships attention for one round.