With your arsenal I would fore go the Saiga. You already have the AR. Every home should have a shotgun. Semi autos are as low as $700(good ones). But a nice 12G Mossberg should do the trick. Semi auto 308 185 grain rifle like a SA M1A or SOCOM will finish off your arsenal real nice. Those are good to a 1000 yards equiped with the right scope and good eyesight!