is there a 2nd floor above what you described? is the structure well insulated?
if you have a one-floor ranch then the mark1 might be suitable, but i would advise against it. the mark1 is a very small coal stove. i always try to buy bigger (in btu terms) than what i need, and with the mark2 or 3 you might be surprised that it's heating the whole house too even on the coldest & windiest days. a manual coal stove needs maintenance twice a day normally, and have a barometric damper installed so that a percentage of your heat isn't going up the chimney and heating syracuse, ny instead of your home.