@Woodburnerguy2 - Heating a raised ranch about 1500sq ft with a BK princess in NW New Jersey, I think our climates are fairly similar, perhaps your slightly warmer in the heart of winter, but our shoulder seasons are prob the same. My place certainly has less insulation (cons circa 1987 2x4 framed)
I totally understand the worry some comment on whether there will be excessive creosote build up, and I can say I do not have that issue. My setup is straight up from the flue collar to chimney cap, since I dont have an existing masonry chimney I went with 6" dvl black pipe (double wall) to class A pipe at the basement ceiling then class A the rest of the way up, approx 18 -19ft total from stove to cap. I'm assuming based on your post that you will have almost the same setup, dont quite understand the 45deg elbow with coffered ceiling though, that doesnt make sense to me with a prefab chimney.
As with any stove, to reduce chimney build up is comes down to wood supply, BK recommends wood to be below 20% moisture, I have noticed a big difference in stove operation and performance when I use wood thats between 15-18% vs the 18 to 22% in terms of build up and overall burn time satisfaction. When burning wood that was between 18-20% I would have noticeable cap debris that would need to be brushed off mid season then again (although not as bad) at the end of the season, still only need to clean the chimney once a season but I do a mid season cleaning due to my concerns of chimney fires (I'm on the fire dept and see it all the time in the winter, so I'm a helicopter chimney / stove cleaner)
When I had my epa reburn tube stove I think I had a dirtier chimney, this was because I was getting to much heat at a short duration and I would constantly fiddle with the stove, trying to turn it down earlier to have low output, load less but burn medium to high, and lack of experience. Like what
@Poindexter stated, think of your stove as a fuel tank, the air adjustment t-stat is your throttle, so once you get a well seated fire with the cat active, all you have to do is turn the stove down to your desired output and walk away, for myself, depending on the weather depends on how fast I return back to the stove, if its real cold I'll be back to reload 8 hours later, if its warmer like now (lows in the mid 30's, highs almost to 50 deg f) I'll be back the next day to reload.
With build up on glass, yes my princess window gets dirty in the shoulder seasons, its actually like a badge on honor to me to see black glass, but no smoke coming out the chimney, thats what I paid for lol, but once it gets colder out and I need more heat, I turn the stove up and the glass for the most part self cleans, you can also do a small to medium load of smaller split wood and run the stove on high and within 40min that glass is 95% clean, minus the extreme corners.
The next thing is totally a user preference, I dont like any stove that has a fire box 2.2cu ft and under, to me its silly to think you'll get a full nights burn out of it with useable heat, but thats up to the user to decide whether they want to go to bed a 11pm with a fully loaded stove and still wake up chilly at 6am due to the stove only having a few coals to re-lit wood left over.
I'm also a big proponent of the BK princesses deep belly, for me I clean out the ash every 2 weeks when burning full time, thats huge, I went from every 4 days to 2 weeks, cut my potential dust production down hugely.
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1st pic is the end of November, dirty glass from shoulder season burning. 2nd pic is end of this January, it got colder and I burnt hotter, glass cleaned up just by the fire itself.