I currently own a Simplicity Conquest garden tractor that is about 5 years old and am thinking of trading it in on a similiarly aged Simplicity Legacy because I feel I need a more rugged tractor. I am mowing about 6 acres, 4 of which is in pasture and is hilly and rough due to horses cutting up the turf. Not many rocks fortunately. Will the Legacy hold up for this type of work? I will probably be mowing 8 hours or so every 2 weeks on the pasture and about 1 1/2 hours on the lawn.