Clearing a field

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?

 

Your W/B will do the job just fine. Set the higth all the way up and mow it, 2 times if needed.

Gene