I have to say, I have never liked the deca/EQ stack. I feel that the two are very similar. True EQ is milder, retains less water and aromatises at a lower rate but in my experience, I don't think there a great synergy w/the two.
Getting back to the post question. If your a newbie, I would run deca in the 300-400 range. I don't run deca for longer then 8 weeks b/c of sides and that is what I would reccomend. Honestly, I haven't run deca in a few years - always run EQ now. I think even running a small dose of test with it would help your gains along greatly; mainly b/c your receptors are fresh and should react well to the stimulus.
Hope this helps good luck!