Looks nice! Here are a few questions you could have ask.
Did you buy a brand new? Was ever used commercially? Over a hundred hours a year seems like a lot for a personal yard do you have a huge property mowing? What maintenance has been done on it? Oil change interval? Hydro fluid changes? Other things that may have broken and been replaced? Other things that may have been replace due to wear such as tires etc.
Other than that it just a matter of checking it out and seeing if everything operates properly and if the engine sounds good.
I am guessing you will probably put 50 hours on to it a season. At that rate it lasts you 20 years. I look forward to your impressions after having driven it, I suspect you will find the ride even more comfortable then Is 700.
Having a super cushy mower you might not mind your uneven lawn so much.
Had a phone conversation with the guy today. It was used commercially, no service records, needs a spindle replaced. Making me kind of skeptical, I am still planning to go check it out tonight, it's only about 45 minutes away. Not necessarily deal breakers, but not what I was hoping to ehar either.