I have a 1 acre lot, flat, open, very few obstacles to mow. Have been splitting between push mower (22" Murray) for the front and perimeter of the house and 42" rider for the back yard. Both mowers are past their good use point and I need to replace them. My question is how long does it take mow using a 33" self propelled walk behind? The area that I currently push mow, about half of the property, takes about 1.5 to 2 hours depending. Will the 33" self propelled do the job and if so, how long will it take?