Sound like fun, I am also pushing ahead with Dark Angels.
In terms of what I've managed to pick up so far:
Apothecary Biologis
Azrael
Captain in Termi Armor
Librarian in Termi Armor
Lieutenant with Combi-weapon
Lion El'Johnson
Master Lazarus (not arrived yet)
Cypher (I'll be playing him as a Space Marine Captain with Plasma Pistol/Master-crafted Power Weapon, Artificer Armor)
2x Assault Intercessor Squads (10x)
Intercessor Squad (10x) (tempted to paint these in black ala Fallen)
Ballistus Dreadnought
Hellblaster squad (10x)
Infernus squad (10x)
Redemptor Dreadnought (with PLASMA of course!)
Sternguard Veteran Squad (5x)
Terminator Squad (5x)
I'm now waiting for the upcoming rumoured Deathwing box set, as sounds like that'll have a couple of characters, some refreshed Deathwing Knights, and some extra terminators, which should take me right to around 3000 points. If he's not in there, I'll probably pickup the new Terminator Chaplain also. MAYBE Asmodai although I'm not 100% on the new model yet.
The general vibe I'm going for is a heavy task force under the Lion, so a bit more specialist, a bit more heavily equipped. Cypher in there in the hopes they'll give him back the option to drop into an Imperial army (as he had in previous editions), with the good humoured headcannon being he is there to assist the Lion. Him and the Lion are both 100% aware he's there and who he is, but to everyone else he's just Captain Kyp; he has snuck in under the noses of everyone else, and is doing his best to avoid annoying the Lion so he doesn't out him in front of Azrael and the others
I did look multiple times at the Dark Angels Combat Patrol in the past (love me some Dreadnoughts etc), but couldn't quite bring myself to buy it as it felt like it was squandering value on upgrade packs when I'd rather have had more marines in it, just felt poor in terms of value compared to some of the others, although it's looking good compared to some of the new ones!!