help wanted. downsizing and updating to 7th

Hi. I've been a de player off and on since they first appeared. I've got a sizeable army however it's only really been used for apocalypse sized games and has been using outdated rulesets. seems like I Just bought 6th Ed codex.
I'm now gaming more regularly and at a much lower points level than usual. Also using the current codex and rules.
My collection is
40 kaballites
20 wyches
10 incubi
Archon
Succubus
Heamonculus
20 scourges
10 Hellion
4 venoms
6 raiders
2 ravagers
3 jet fighters
2 bombers
5 talos
6 jetbikes
2 titans
Any advice on slimming this down to 1500 points of modern murder?
Hanks for any help you can offer.

I'd run a Combined arms detachment with:
4 x 5 kabalites in venoms = 420
3 x 5 scourges with heat lances or haywire blasters = 360
Then I'd consider corpsetheif claw, which is 5 talos in a unit, coven formation. The jet bikes are good, so maybe take a team of scourges out for them.

Probably run a lhamean or medusa as an HQ to save points
Incubi can be good, but that's controversial

Edit: with ynnead coming out, you might be able to use less efficient units more viably.

I would not sell any of your models as you never know when a unit that was formerly garbage is going to be good again. There has been a whisper or two about a new Dark Eldar codex sometime in the mid future and we can't know what it will hold for us. You're not going to be able to sell garbage units and make much money because they're undesirable atm. Just my $0.02.

Sorry downsizing as in choosing a smaller army. Not selling.