Looking to buy a good used quad for my Dad for Christmas and will be the first to admit I know nothing about these units. He's 72 and retired so I thought he could keep himself busy through the winter by pushing snow around his farm. 300ft driveway so needs some maintenance. What should I be looking for here as far as size and make? Any particular tires for snow or will he need chains as well? What about a snow blade, any advice there? I'm thinking of $6k-$7K so will I be in the ball park? This is pretty much all it will be used for, maybe some running around in the pastures during summer but the quad will never leave the farm so I'm not looking for a serious mud machine. Appreciate the input.