The altitudes on the chart are minimum altitudes unless specified as otherwise (may be a line shown above and/or below the altitude). You don't have to be at every stepdown altitude, just as long as you are above each altitude. You have to be pretty high on a localizer to get a false glideslope (6 and 9 degrees? not sure). Besides the ILS is guaranteed out to 18nm. 35 degrees either side out to 10nm, 10 degrees out to 18nm.