WoW some great advice. I like the idea about the 4 corners of the house with tunnells between. An IED to stop the thugs, the trash cans full of sand. Even Kevin's suggestion of the 9' deer fences.
Having a high ground OP/LP with some kind of exit strategy for a sniper to flank and provide support to the main group is awesome.
As far as 8 trucks full of armed men go, well that would be our family on their way to the bug out location. So don't be hunting us down, we are really just good folks looking to be safe and we will be loaded for a party with an empty dance card. So how do I know that another 8 trucks full of armed men and women is not another family heading for the hills? and would I want to give away my location until I have a good idea of their intentions?