i have a customer i cut for and hes looking to get rid of his z520a estate series 54'' 25hp john deere mower it has 180 hours and looks almost new. hes only asking 4000 for it. i cut 12 yards currently and looking to get 3 more to fill up my schedule. my question can the mower handle that kind of work load. they are all 1/2 - 1 acre lots. i baby my stuff, but was wondering if i can get at least a 1000 hours out of the mower.