as of the house, i did some maths and it showed that the bigger you get the more house you gotta build to keep max efficiency. So, for starter, 0% homes till 1k acres is nice, 35% draft though. As you grow fatter, you build more homes and higher your drafts %... my calculations went from 0% homes/1k acres/35% draft to 20%homes/3k acres/56%draft