Next door neighbor of a customer approached me to mow a 2.5 acre field he has. It's pretty overgrown, didn't want to put my WB through it, so I'm planning on renting a brushcutter. The rental place has a Bachtold B8200, so now I'm left with estimating my time. Any clues how long it'll take to mow 2.5 acres with this? Is there a better option? It's mainly grass, not terribly thick, about mid-shin-high. Or should a 48" WB with 17hp Kawasaki be able to handle this?