Contact a local agent or even a few agents, then run with the one you feel is most responsive, knowledgeable and you are the most comfortable with. A seasoned experienced agent in your corner is typically free to you as the seller pays the selling broker's commission.
I've bought a few rural tracts over the years ranging from 12 acres to a few hundred acres. Personally, give me an experienced real estate agent that specializes in rural land tracts. Worth their weight in gold or bitcoin depending on your preference.
Many of these agents are foresters by education and know how to advise you on timber value and management.