New Project: No One Expects the Inquisition

So I realized that with a few small additions I could use elements of my Lamenters army and IG army together in a Grey Knight list. I've resolved to make 19 Death Cult Assassin/Crusaders from Flagellants (going to give them Greek Hoplite helmets and power weapons) and get three sets of Dreadnought Autocannons. Only other thing I need is an Inquisitor to use an Coteaz, I'm thinking of going with one of the female ones. The rationale for the army would be a Lamenter Pentinent Strike Force pushed all the way to the end and then absorbed into an Inquisitors retinue. Here is the list I'm making:

HQ
Librarian w/ Stave, Quicksilver, Might of Titan, Shrouding, Warp Rift 205
Coteaz 100

Elites
Techmarine w/ Rad, Psychotroke 115
Techmarine w/ Rad, Psychotroke 115

Troops
5*Assassins, 3*Crusaders, Banisher w/ Eviscerator 150
6*Assassins, 3*Crusaders, Banisher w/ Eviscerator 165
5*Warriors w/ Razorback w/ Psybolt 70
5*Warriors w/ Razorback w/Assault Cannon, Psybolt 105
5*Warriors w/ 2*Melta, Rhino 80
5*Warriors w/ 2*Melta, Rhino 80

Fast Attack
Stormraven 205
Stormraven 205

Heavy Support
Psyfleman 135
Psyfleman 135
Psyfleman 135