I have a scut with about 26hp at the PTO and mow about 5 acres with a 4 foot cutter. I REALLY wish I had gone for a tractor with more horsepower.....especially now that the neighbor across the road is having his 60 acres of fields that haven't been cut in over twenty years cleaned up by a mid size Deere with probably 50+ hp and a six foot cutter.
The difference between how clean cut his fields are versus mine is amazing.