Those are excellent points to consider. My BOB ( if I even did bug out, only in extreme circumstances ) is set up to go light and subsist off the land. I have 30 years of hunting/ fishing/ etc experince to draw on so I am fairly confident I could provide for myself. However 4-5 others would be difficult as you noted without logistical support. I think a lot of people have some optimistic conceptions of a post SHTF world. There are different degrees of course of the level of collapse. that would really influence how your BOB or combat load out bag would be configured, vehicular or carried on your person.