​Logs need to be at least 8 inch diameter inside bark small end, at least 8 feet long and straight and sound. Good grade logs do not develop until you get into at least the 14 inch diameter range and up. To be commercial, you will need at least a semi load. The issue here is hauling as well as the need to have a loader to load the semi.

If the above is not an option, you might go to the Wood-Mizer website and search for a sawyer. You will likely find one that would saw the logs for you and maybe one that would be interested in smaller quantities of logs.

You might also check with any local sawmill operation or district forester.

Resources
Wood-Mizer (Find a local portable sawmill service)
Indiana District Foresters
Forestry and Natural Resources Extension Workshops (Hardwood Lumber workshop)
The Education Store (Search the keyword “lumber” to find a large list of resources)

Dan Cassens, professor of wood products
Department of Forestry and Natural Resources
Purdue University