Never hunted the area but have hiked it a bunch. Certainly in September, but even in October and November, I would expect this to be a high traffic area with recreational dayhikers and backcountry enthusiasts. Quandry is one of the easiest 14er's and thus attracts bunches of crowds. Most of the hikers will remain close to the trail along the Eastern ridgeline that leads to the summit, but there are still plenty of others who walk the road into McCullough gulch.
Could still be reasonable hunting, but don't expect to be alone.
Here is a very handy and effective device I use to dispense corn with - but it could also be used to dispense any other seed or deer feed.
I had an old feeder that had a failed motor... I made a set of brackets to attach the feeder to the rear of the 4 wheeler - the lower one encircles the feeder and has a forward section with holes drilled in the outer ends of the bracket... these holes align with two 5/16" bolts that drilled into the rack of the 4 wheeler.
The upper bracket is an "L" shaped...