I think a Larger Country Clipper would solve your maintenance access issues for sure, they also have a optional air ride seat I think... but I cannot imagine mowing 6 acres of hay with a ztr. if you look at the tractors that normally mow that type of acreage you will notice the large wheels. Those wheels allow you to go through the ruts and unlevel ground much more comfortably than the relative tiny tires on a ztr. I would keep a large tractor for it and hire a kid to drive it if needed. Then get you a nice Country clipper(they offer a power deck lift feature), Ferris or other high end ztr that meets your ride quality and durability needs. Your choices are wide open if you dont have to also plan on mowing 6 acres of hay field.