The peak of the rut will be over, but as has been mentioned, you may still hear some bugles, especially the first day or two of season, but once they feel the hunting pressure, the bulging will stop.
Be prepared to be out of camp in the dark and not get back to camp until after dark. Stay in the woods all day to give yourself as much chance as possible.
Get a map of the area and have a GPS. When I used to rifle hunt, we'd just go to a meadow and sit the first few hours of the day and the last few hours of the day. If you hear bugling, go to it. Maybe still hunt during mid day on north facing slope. They usually bed on north facing slopes, in thick timber where it's cool.
As has been mentioned, get in shape. Push yourself to get in the best shape possible. Elk hunting will take it out of you, BUT once you kill one and have to pack it off the mtn., you'll quickly see why you need to be in shape.
Good luck..