I always recommend creating as much of a weather/coal use/boiler settings LOG as you can.
Since the BTU load on the boiler varies greatly with the weather, I'd record:
Outside air temperature,
Wind velocity and direction
sunny or cloudy, day/night
Then track the stoker settings, # of turns on the feed for your stoker [I think]
combustion fan flapper/door opening
# of pounds of coal used per day,
Breaker where the coal was obtained
How much fly ash in the flue pipes, and how often they are cleaned.
And of course if the boiler was able to maintain target water temp; 180*?
And return water temperature, to show load on the system.
With the above info, you can get a real 'big picture' of what's happening with your house/weather/ boiler/ whole system.
As for your boiler being able to heat the house well,,
INSULATE, SEAL out INFILTRATION, and [did I say? ] INSULATE.
A grand spent on spray foam, and added insulation will return you $ 10K over the next decade.. and you can't put a $$ value on comfort in your house.
It's a tough decision, but resist the temptation to do ' that's good enough' on the foam and fiberglass,, go after: 'that's the best that CAN be done'.. and you will be rewarded tenfold.
OH, and if you have a really cold night coming, make a habit of giving the KA4's interior a quick brush down with boiler cleaning brushes, you can do this with the stove running if you buy the right brushes and handles.. this will increase the heat transfer to the water, by removing the thin layer of fly ash on the water vessel.
Sounds like I want you to hire a secretary !!
Good work getting it installed and burning..