I'd say:
A)
1100 points in troops (4xBL Serpents w/10
DA).
A Grand in seer councils.
3 Prisms.
B)
Same as A, replace seer councils with 3xFire Dragons in serpents.
So anywhere from 7-10 vehicles.
You can add more by taking less troops and do a 'hide inside' style of army.
That would be C, option wealthy:
http://www.dakkadakka.com/dakkaforum/posts/list/218969.page