Sounds like call to the local forestry unit or a timber consultant is the next step.
One thing to keep in mind when talking to a private consultant working for a timber company or outfit that provides the service you might need is they will likely tell you lots of works needs done or lots of trees need harvested. That's how they make their money and even if they don't provide what you need they will gladly funnel your job to someone who can do it.
If trying to arrange a cost share deal with whatever gov entity you are dealing with they will likely require a forest plan completed. A private forester can do this for you, but again, is likely to recommend lots of works done because that's how they or their company makes their money. The gov entity will pay for having a forest plan done and it doesn't mean you need to do any of the work "recommended"
The forester working for the State, Dept of Lands, etc, doesn't have anything riding on your choice of what needs done. Remember, it's you property.
