When the market is right, sell the standing trees to someone that cuts hardwood into fine lumber.
A friend of mine had a mobil mill in which he trailerd to the customers site. He custom cut the lumber and charged according to board feet. He also bought or removed for free various trees for his own lumber use.
Once he bought a special mill to build over a huge oak tree which he could not cut up any other way. He sold the mill after that one tree was cut to lumber on the spot where it fell.
Thanks for the tip.