Wish I could help here, but I work in a thick swampland with an old tractor and no help, so I cannot advise you. Also, I go by cordage, not tonnage, but I believe there is a cord/weight calculator at the main board of this site. My cutting is so dependent upon ground conditions and skid-trail cutting, that I couldn't give you an estimate of what I even do. I guess a REAL good day for me is about 1000 bd.ft. I run a mobile dimension mill.