I lost my old Toro Groundsmaster with a relatively new Mitsubishi diesel engine and 72" out front deck to Hurricane Katrina on the Mississippi Gulf Coast. I am starting to pick up the pieces and am looking at used equipment, again. I saw a 2 year old Exmark with 28 hp gas engine and 72" deck. Is a 28 hp gas engine enough for a 72" deck??? Thanks for any input.