Horsepower should be chosen around the farm tools the tractor will actually pull, not only the size of the farm.
Consider these factors
- Soil type and depth of tillage
- Implement width and weight
- PTO power demand
- Hydraulic lifting capacity
- Future tool upgrades
A tractor that is too small will struggle, burn more fuel under load, and slow field work. A tractor that is too large may cost more than the farm needs.