Here's a different list. Going for a heavy assault with lots of dakka... I'm surprised how much I could fit in this list.
Goes with Assault Warband in Landraider Crusader
Warband x10 - 175
Crusaderx4 Death Cult Assassinx4 Ministorum Priest w/ Eviscerator
Land Raider Crusader - Storm Bolter Psybolt Ammunition - 265
Runs up and smashes things
Warband x12 - 86
Sits in Aegis line and blasts things
Land Raider - Multimelta - 260
Big annoying fire power
Sisters of Battle
Canoness - 95
Blade of Admonition
Battle Sister Squad x15 - 180
All go together and march up the middle
Battle Sister Squad x6 - 72
Mans the quadgun
Battle Sister Squad x9 - 163
Flamer Heavy Flamer Rhino
Sneaks up behind the Crusader and grabs an objective. Maybe change weapons?
Repentia Squad x7 - 153
Sneaks up behind Land Raider
Dominion Squad x6 - 168
Melta Gunx3 Immolator
Outflanks and blows something up. Immolator heavy flamers burninator something.
This is really rough, but I like the concept of having a big mash of stuff running up the field and having lots of stuff to shoot as well.
Let me know what you all think!