You should be able to run at a stove temp of around 500*F (measured near the top on the side) and a stack temp of around 200*F. As JC said a picture is worth a thousand words!
You didn't say what kind of chimney, or if you have measured the draft, or how you have the barometric damper set (the weight position)). All these items are part of it and should be checked. The draft should be -.02 to -.04 WC, if you can't measure it then set the weight on the baro to .04.
I have never run one of the new style Alaska units so I can't be much help on the finer points. Jpen or one of the other members that have one of these can help you determine what the optimum stack temps Vs stove temps would be.
Hope this helps a little.