To add to the deck discussion you say "flat" but is it REALLY flat? If its not a 60" deck will reveal it fast. My 3 acres is "flat" also but I have to really watch what Im doing and make height adjustments in different areas or it will look like a construction site. I think a 40" or so would be ideal. Its small enough to make clean cuts but with the speed still wont take you anytime to finish. An extra lap or two more than makes up for the few inches you are missing much like sex.