We just moved into a new home with 12.5 acres. 4 acres is grass and the rest is wooded. The grassy area is flat. 2 acres is pretty much Bermuda, and the other 2 is what I would call a lightly wooded grove with weeds. The 2 with Bermuda will be cut every 1-2 weeks depending on growth. The weedy grove will probably be once a month. We live in the Atlanta Georgia area, so the mowing season is long here. I do not currently own a riding mower at all. My oldest son and I maintained our previous .75 acre home with a Honda self propelled and an old Murray push mower. I don't love cutting grass, but I don't hate it either. I have six kids, and prefer to spend my weekends hiking, camping, or watching football with them. I'd like the lawn to be completed on a weekday evening after work. My oldest son is able to use the push mower, weedwacker, and blower. I have settled on a John Deere Zero turn mower. There is a dealer 5 miles from my house, and they have been great to work with so far. So, I have a few questions to ask you guys since you are the pros. My options are 1) Z445 54 inch with Kawi motor 2) z910A 54 inch with Kawi motor I looked at the 700 series, but the quoted price between the z910a and the z710a was only about $450 more than the z710a. Which would you pick? I have 5k cash for the purchase, and the dealer is quoting me 0% for the difference if I go with the z910a. Is the 900 series overkill for my lawn? The Z445 is going to be around $4500 OTD, and the Z910A will be about $7750. They are offering free delivery. How long can I expect the 910 to last? Will it last 10 years? I don't anticipate putting more that 100hours a year on the machine. I have 5 sons who will be able to help with the lawn as they get a little older, so over time I'll be getting a CUT tractor to help maintain the property as well, then the lawn cutting can be shared among them. How long do you think it would take on average to cut the full 4 acres? Thanks for your help!