Sounds like you have thought this thru a few times.
Evaluate your manpower requirements to secure the property.
It seems to me that you and your nieghbors will need sentries to keep wandering souls from this vantage point.. You will not want someone up there studying your property with the intent of taking it from you. The elevation above your house is a great tactical advatage. If you haven’t done so invest in good radios for communicating with each other. Dwellings that are not in view of each other are tacticaly difficult to defend with mutual fire. Does this hill over look your nieghbors as well?
Personally I have a load of problems with nieghbors and a man power shortage.