topic says it, im new to DK but got xp with all specs. but was wondering what spec should i go for with a ret pala as partner?

this is my current gear http://eu.wowarmory.com/character-sh...reaver&n=Snare
im currently pve specd so ignore that

and if the ret pala goes holy what spec would be optimal then?

pls feel free to give tips for what its clever to remember with this setup