Yeh I love this mission, I wouldn't still be trying it after 30-40 attempts otherwise lol.
Came close last night though, took out 3 rooftop snipers and the 3 guards in the rear gardens.
Then I cleared the 3 man patrol that roam outside the gates, plus the 3 sitting at the gates.
Then from the roof of one of the perimeter buildings I cleared about 8 guys from the front gardens.
Then I set some mines. A bunch on the road in incase reinforcements started driving in, and some around the back corner to catch anybody that runs around the corner.
Then I entered from the side door I blew open and made my way to the first floor. Second floor was barricaded so I blew open a door on a side wall and a tango was inside ready to take my head of.