8-10 cord per year, for four households? I suspect that number is a little low. And all of that with a 20" bar on a 50cc? Man, a modern 60+cc saw would really be a game changer for you sir. Time saver too. I suggest scraping up $400 and picking up a nice used 555, 562xp, or 365. I bet you can find a new or near new 2166 for that much coin with a 24" bar and an "R" melted into the bottom.