deseart eagles are lame, dont bother. 7 rounds of .50ae, first round would KILL them, but more then one person, you would be shot dead, for you sir, about how big you look in your pictures, and the fact that you would be in a house, you want a 12 gauge pump action benelli m2 its a simple gun, and it has a large shell, and you basically only have to point it in their GENERAL direction, and then pump (witch is surprisingly easy, and quick), they are legal in all of usa too, here is a link, http://www.gunsamerica.com/guns/976706081.htm
doesnt have to be that fancy, you can get a MUTCH cheaper model, shit, even at a sporting goods store. i say load up big time, and HOPE that they come back. post up with a couple close freinds, or maybe even by your self, what ever. as soon as they all in the house, its ON, you can blast them all legally if you wanted too. just dont run outside with your gun. that will get you arrested. then, if i were you, i would call the cops, explain your story, then when the house is yours again, throw a muther fuckin party, and get wasted. but dont let your gaurd down, ever. they think your not home, your house will be vandalized to all hell. and they will never stop waiting.