Help with Ynnari Escalation

Hey All,

So as a means to build up my Dark Eldar / Eldar army, Im going to be doing an escalation campaign with my brother (who will likely play Imperial Fists or Thousand Sons), I don't know his army comp, but likely to face centurion and bolter spam from IF and heavy psychic ,small elite units from Thousand Sons.
The campaign will start at 500 points and increase by 250 increments until 2000, then increase by 500. We will continue until we hit 5000, or get bored. The rules are that the army must be battle-forged and once upgrades are purchased for a unit, they need to remain throughout the campaign. We can chop and change formations and move units around as much as we like.

Units i own equals next to nothing so will more or less be starting from scratch. This is just a friendly campaign and a way to get units I really like, on the flip side I still want to do well.
My problem is that with so many lovely models i want to include in the army, I'm spoilt for choice and have difficulty prioritsing.
Units I'm looking to include are Reavers, Scat Bikes, some flyers (probably from 1500 on), a few harlequins (skyweavers, shadowseers, troupe). I absolutely love my grotesque converstions for Dark Eldar and really want to include a grotesqurie (not very fluffy i know).
Other formations i've been thinking of using for the reborn warhost are Ynnead's Net (get all the bike i want) and Cegorach's Jest (getting in the harlys and bikes.

I'm thinking of starting off with this 500 point list.

++ Y Reborn Warhost (498pts) ++

+ HQ (95pts) +
········(E) Autarch (95pts) [Laser Lance, Shuriken Pistol, Skyrunner Jetbike]

+ Troops (210pts) +
········2x (DE) Kabalite Warriors (105pts) [5x Kabalite Warrior]
············(DE) Venom [Splinter Cannon]

+ Fast Attack (193pts) +
········(DE) Reavers (73pts) [Cluster Caltrops, 2x Reaver]
············Arena Champion [Close Combat Weapon]

········(DE) Scourges (120pts) [Scourge]
············Scourge [Shard Carbine]
············4x Scourge w/ Heavy or Special Weapon [Haywire Blaster]

I want to do well at each point level, but as said before quite stuck on where to go.

It would be great to get advice from any of the more experienced players here, whether it be advice on what units to prioritise, or suggestions on a list at one of the points levels.
Thanks in advance and if you need more info i'll try and answer

The thing with escalation is there is usually a point where any given army wants to change gears half way through with a full list rewrite. SoB are the most glaring where up to about 1250 points the answer is "bring more Penitent Engines" and then at 1500 immediately switch to Immolator spam with no walkers at all. At 500 I would say keep in simple with some good all-rounders. A Wraithlord might be called for as your heavy support as it's immune to bolter fire and at this points level CSM don't have much that's an immediate threat to it beyond the occasional lascannon/meltagun.

Never actually thought about using a wraithguard, good shout. What is the best bang for buck when it dome to weapons?

Wraithlord, Wraithguard I wouldn't recommend at this points level. Honestly I'd run him with 2x Bright Lances and his flamey flames.