Andy,
Agree that regrading the boundary road will create the opportunity to significantly increase your drainage area.
Is the tilled (bare) square of ground in the aerial photo on your property? Curious as to its purpose.
I wonder what the purpose of the existing berms is. Lots of rock - I hope your land is not just sitting on a big granite ledge. The soil grows grass and that is one of the most important factors in determining how much work will need to be done to increase fertility to adequate levels to support your intended crops.
I hope that a design guru will jump in with input. I'm a construction guy and don't know much about pond design. I'll enjoy seeing the coming photos.