It's not that bad, Orks will still be a lower tier competitive army in my opinion... but if you want to, just wait until you start seeing some lists pop up on the net. Then you can see what people are saying works, and what doesn't.
Mike may be able to tell you what he has seen work and what has not.
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)