Half your total choices. including Transports and
IC.
The army is a bit naked. There's very little anti-tank and you're horribly lacking in psy-power.
one of the things that makes
GK so powerful is their Psycannons. consider adding a few.
Another thing is psyker inquisition. Those guys with divination can really change how the game is played - even prescience is enough to piss off a lot of opponents.
You could have squads with 3+4++ for gods sake! Imagine that!
Assault cannons on those SR. Yes, I know~! I said you're lacking in Anti-tank, but
AC has a decent chance of doing something to even a not-so-mighty
LR, and you only need for glances to blow a
LR up.
in that case, consider dropping a knight and taking hurricanes on both, as well as psi-bolt ammo - you're firing 12 S5 AP5 shots, 4 S7 AP4 rending shots as well as a single S8AP1 shot and two small blasts! If you're flying, you will really see those SR unleash a torrent of fire on your opponents. They truly can be a 'gunship' now.
remembering in the above, Flyers can fire as many as 4 weapons and move as far as 36" - and fire two missiles while they're at it. That's a huge threat for something that's only getting hit on sixes - and that Multi-melta can deal with enemy Anti-Air (should they chose to take any) since it has skyfire by default.
What's more, you could consider psibolt Razorbacks - S6AP4 will deal with light armour and medium infantry admirably.