1.In general, more horsepower is better and safer.
2.
Take into account your storage capabilities.
3.I recommend buying a new versus used tractor.
Compact tractors, commonly known as a compact utility tractor, are made for small farms. They are designed for homeowners or hobby farmers with small acreage, i.e, a compact tractor is an agricultural tractor equipped with a 540- rpm PTO and a three-point hitch designed for Category 1 implements only. Compact tractors usually weigh less than 1900 kg and have less than 40 PTO HP. They are designed to be used with mowers and light duty material handling equipment.