My property is about the same size i.e. typical suburbian home. Three years ago, I inherited a self-propelled 7hp, 21", mower with no bag and now, after some 20 years of doing it with a variety of gas and electric machines, I finally look forward to doing it...
It's a flat property so hills was no excuse. But I like to mulch in the grass clippings and leaves and I get a better lawn because of it, so I tend to spend a bit extra time out there. I weigh down the back flap in order to get that 'golf-course' look, so a self propelled was perfect.
Trouble is, now my neighbours want me to take as good care of their lawns as I do mine, and have offered to pay me. So, economically, it pays for itself, even tho' sometimes I get paid by the beer, as they say.:yes: