This would be for use on relatively flat ground. Mower is a 48" belt drive exmark metro. I'd like to get a sulky for it and build a striper kit for it. I weigh in at a modest 275. Would the 15hp Kawi be underpowered for this? Yeah, maybe if I didn't use a sulky I'd lose some weight, but with 2 bad knees I gotta do what I gotta do.