Su asked you what's growing now? Bill Mollison says that "observation" is the first task. So, do a detailed survey. Draw a map in the largest scale you can manage.
What plants are growing? Trees, shrubs, ground cover etc.
What animals use the land for good or ill.
What's the underlying soil like.. acid or alkali (Su's soil test will confirm)
Where does the sun rise & set relative to your plot?
What the primary wind direction. Where do storms come from?
Is there any fire risk in the area?
If you have this info down on paper by the time the Ag rep gets there, s/he'll have a lot more to work with in giving advice.
First thing plant something, anything, to make a start. Nitrogen fixer maybe. Beans will give nice flowers, beans and