A hodge-podge Grey Knight force of 1850 points

[Math Mathonwy]

HQ (200)
(Grand Master) 175
- Incinerator 5
- Rad Grenades 15
- Mastercraft 5
== 200

TROOPS (555)
5 Terminator squad 200
- Psycannon 25
- 4 x Halberd
- 1 x Hammer
== 225

10 Strike Squad 200
- 2 x Psycannon 20
- Psybolts 20
== 240

10 Strike Squad 200
- 2 x Psycannon 20
- Psybolts 20
- Razorback 45
- Psybolts 5
== 290

FAST ATTACK (410)
Stormraven 205
- Multimelta

Stormraven 205
- Multimelta

HEAVY SUPPORT (650)
Dreadknight 130
- Personal Teleporter 75
- Nemesis Greatsword 25
- Heavy Incinerator 30
== 260

Dreadknight 130
- Personal Teleporter 75
- Nemesis Greatsword 25
- Heavy Incinerator 30
== 260

Dreadnought 115
- Assault Cannon, DCCW 10
- Psybolt 5
== 130

=== 1815

So, the idea is that the Grey Knight Strike Squad without a transport hops onto one Stormraven along with the Dreadnought and the Grandmaster and Terminators board the other. The Dreadknights scout right into the face of the enemy and the idea is to be very close very fast. The second GKSS divides into two one part riding in the Razorback and the other hanging back grabbing an objective.

Is there any hope for the force or is it completely janky?

There's 35 points to spare - not sure what to use them for. Hurricane bolters for one raven and Blind Grenades for the bossman?