Couple things might be worth consider... firstly, the Dreadknight doesn't require both weapon upgrades - the Psycannon or Incinerator alone is typically good enough... which saves you some hefty points.
Secondly, you've got no transport for Purifiers or Strike Squad that I saw...(?) so they're unlikely to get there and earn their keep... especially the Purifiers with 2 incinerators.
You're better off dropping both, using the Nemesis Strikeforce so you only require 1 Troop choice and then take the best unit in your army... Interceptors!
10 Interceptors with 2 Incinerators will do a much better job - they can actually GET there with the flamers, they can support the Dreadknight and give you speed for objective grabbing and if you really want to get yourself some psyker points, combat squad them... then you're only 1 less than before, but same number of models.
(Edit: Just seen your league requires 2 troops) - As you're Combat Squading terminators already, just make them 2x 5 man squads for your 2 troops
(Edit: Tweaking like this actually saves you points) - Giving you some spare to kick around... maybe Libre Demonica for librarian, or Soul Glaive? Hammer into Interceptors?
Automatically Appended Next Post: Comparative example as well... for 1000pt list of same limitations for my Blood Angels:
HQ
Sanguinary Priest
ELITE
5 Sternguard in Razorback with Las/
plas Turret
TROOP
5 Tactical Marines with Meltagun in Razorback with Las/
plas Turret
5 Tactical Marines with Meltagun in Razorback with Las/
plas Turret
5 Tactical Marines with Meltagun in Razorback with Las/
plas Turret
FAST
4 Bikes with 2 Gravguns
HEAVY
1 Whirlwind with Overcharged Engines
60pts spare... probably for either a Scout Sniper squad or toss 4 Power Weapons around or 5 Combiplas on Sternguard, or find 5pts and take myself a Librarian too
In Theoryhammer the Dreadknight is a bit of an issue, but once he's gone your current list might struggle to compete... Speed from Interceptors would make this a closer game for you.