Hi,
Unfortunately like the initial comments I saw on your Facebook post there is a lot I don't like in this list. After the devastation your three razorwings do with their missiles when they come on I can see your list running out of steam very soon.
Firstly, apart from the +1 reserves I see the Autarch and the Windriders doing little. If you're going to use the Autarch I would give him some wargear to make him better at his task, eg. a laser lance, a fusion gun and a banshee mask.
If you are going to use windriders without heavy weapons, go for MSU units, so i would try to fit in 2 units of 6, or just use one unit with 3 heavy weapons for 4 pts cheaper than your unit of 5.
Overall I think you need to have a think to whether you really need the Eldar allies, as at the moment is the 4th flyer (Crimson Hunter) really needed, the Fire Dragons could be better taken as an Aspect Host and the Windriders aren't adding much firepower. If you have giving up board presense completely on turn 1 you really need to hit like a sledgehammer when you come on turn 2. You could have 2 units of Warp Spiders to compliment the Fire Dragons instead of the Autarch, Windriders and Crimson Hunter (and the aspects warriors would all be BS5 in the Aspect Host).
On the Dark Eldar side, I'd lose one of the Succubus weapons, she's expensive enough. Next coming on 2nd she could turbo her transport to be 30" onto the board so does she really need a WWP (leave that for if she is going to alpha strike with fire dragons to take out a key target, so need to be within 6" of the target).
Incubi are very specialised, and I think you need more resilience (well as much as DE can get) and I would prefer grots in a raider, they can kill numerous low armour save enemy while the succusbus can help against well armoured enemy.
Overall I don't think you need the 4th flyer, and I would save points to upgrade the Incubi to Grots, and if I go completely nuts on cutting what I think is unnecessary upgrades I would try to fit in both the Autarch and the Aspect Host.
Here's my go at your theme:
Scalpel Formation
5 Wracks in Venom with 2 Splinter Cannons - 115
5 Wracks in Venom with 2 Splinter Cannons - 115
Eldar Ally Detachment
Autarch (Fusion gun) - 85 [Joins Fire Dragons in the DE Raider]
3 Windrider Jetbikes - 51
Eldar Aspect Host
5 Fire Dragons (incl Exarch - NO FLAMER) - 120
5 Warp Spiders (incl Exarch) - 105
5 Warp Spiders (incl Exarch) - 105
Dark Eldar Real Space Raider Detachment
Succubus (Glaive) - 90 [Joins Grots]
3 Grotesques in Raider - 160
5 Warriors in Venom with 2 Splinter Cannons - 105
5 Warriors in Venom with 2 Splinter Cannons - 105
3 Razorwing Jetfighters (2 Lances each) - 420
5 Scourges with 4 Haywire Blasters (no sybarite) - 120
Raider (I prefer the raider for the Fire Dragons for the extra hull point if nothing else) - 55
Total: 1751 pts - I'm one point over, so you can lose something small, maybe make one of the Razorwing Jetfighters have Disintegrator Cannons rather than Dark Lances.
I think my list has more punch with the Aspect Host moving the Dragons up to BS5 and joined by the Autarch for another fusion shot, and losing many upgrades to get 2 units of BS5 Warp Spiders.
Rathstar
UPDATE: Lol, just read the title and noticed I have another 99 points to play with
I'd get a 4th Grotesque, and then get a Venom with 2 Splinter Cannons from the last free fast attack slot, making the list 1851 points, so again one of the Razorwings would have to downgrade their lances to disintegrator cannons to get you back to 1846 pts.