1. How near is the farm to a market for the timber. How easy is access to the farm?
2. What is the diameter of the trees, ie, how much timber will each tree produce? Trees grow at different rates depending on the richness of the soil, rainfall etc.
3. What can the proposed buyer do with the land after harvesting the trees?
4. Why don't you harvest the timber yourself and also keep the land for the next project? They aren't making land any more you know.
5. Etc, etc!