2000 pt Crowe Army

I am building my first Grey Knights army, let me know what you think.

HQ
+Librarian (MC NFS, 3x Powers*, +3x Skull) = 185
*To be determined
+Castellan Crowe = 150.

Troops
+Purifiers x10 (MC DH, 5x Halberds, 3x Psycannons, Incinerator) = 290
+Purifiers x10 (MC DH, 5x Halberds, 3x Psycannons, Incinerator) = 290
+Purifiers x10 (MC DH, 5x Halberds, 3x Psycannons, Incinerator) = 290
+Grey Knight Terminators x10 (MC Halberd, 2x DH, 4x Halberds, Psycannon, Incinerator, BBanner, Psybolts) = 480

Heavy
+6x Purgation (MC NFS, DH, 3x Incinerators, Psycannon) = 150

Dedicated Transport
+ Rhino x3 = 120
+ Razorback x1 = 45

TOTAL = 2000 pts

Maybe take a few less incinerators in your purgation squad and take a couple more psycannons instead as I guess ul be using them with the razorback what means you would be able to stand back and thin the lines of the enemy abit befor your troops get there or you can use them to hold objectives while causing abit of trouble while your at it! Just a thought as you have to get close to make good use of the incinerators where as your abit more flexable with the psycannons