I'd bulk up those troops choices.
I also don't think the herald of tzeentch is really worth it for the points.
Or even the skulltaker, id drop them both in favor of a bloodthirster and more on the troops. Not sure though, playtest it and see what you like.
the DP has a lot of points in him too, id drop a ton of that (wings +ironhide is enough) and try squeeze another in their somehow.
Dark Angels 1750 win/loss Record
Win - 23 (Belial helped wreck Ryan's puny Eldar)
Loss - 13 (Brice's Necrons wiped me)
Draw - 2 (The 13th hold out in alpha take and hold)