@Jack you are half covered. I'd given you full cover but the roof of the church is not flat and I imagine you sitting down, balancing yourself with your legs. You can easily break line of sight if you reach to the far side of the roof. If the goons want to follow you they'll either have to enter the church or to go to the far side of the building.
The goons started at about 30 meters and by now they improved positions to ~20 meters.
I am fixing since I forgot their range penalties.
4#9d6t5: 4 # 3 [9d6t5=5, 1, 6, 1, 1, 1, 3, 2,
6] 3 [9d6t5=3, 2, 6, 1, 2, 3, 6, 6,
1] 2 [9d6t5=2, 4, 2, 2, 6, 3, 2, 3,
5] 4 [9d6t5=6, 1, 4, 5, 2, 5, 1, 1,
6]
So their hits are: 2, 3,1,3 - this is better for you