Your stove must be heating pretty well at that temp. Right now mine measures 180 on the Tee connected to the back of the stove. The stove top is 275. It was hotter an hour or two ago after I loaded it and let the new coal catch. It's on it's way back down to idle temp.
We've had a fire going for about 3 weeks now. We burn a hod a day, so I guess that's about 20 lbs? I leave the draft control open 3/4 of a turn. This keeps the temp on the Tee about 150 and the house at about 72. When I get home from work I open the draft and the unburnt coal from the night before catches. While it's livening up I empty the ashpan outside and refill the hod from the bin. When it's lively again I shake it down. Then I start loading up. I usually load the hod in two loads. I let the first load catch, then I load the second half. Right after the second load I turn the draft back to 3/4. I don't have to touch it for 24 hrs. When the colder weather hits my schedule will change and will go back to morning and night shaking and twice the coal.