I figured asmuch, I managed to get just over 200k with everything on max however, with the stores and houses that give 13k+EA set to full rent and all the houses set to lowest( zero gold ) I got just over 145k every 5 minutes. And I've noticed that the villagers are upgrading the quality of the houses themselfs, they're not fixing the houses( which annoys me, it's free gdamn rent they should atleast take care of the place right? ) but everyone's always happy with me. Until they remember the short killing spree I had, in which case I usually bribe them with 10 gold .
With that setup I've manage to make a small fortune, enough atleast to have 8mill in the treasury when I completed the campaign a second time around.