Curlycherry1
Addicted to ArboristSite
600 acres, if you have the demand get a skidder/tractor/dozer and a possessor. Depending on terrain one of those options will be great.
Even with a fairly heavy selective cutting of cull tree 600 acres can only supply a big operation for a few years. My brother's biggest supplier of logs says he needs about 400 acres to keep my brother happy for one year. He cuts 10 to at most 20% of the trees for firewood in the managed forests he works in. The rest are left for lumber. Tops do not work well for many processors. They are too crooked and thus are time wasters to process with the big mechanical processors.